mirror of https://github.com/python/cpython
gh-104773: PEP 594: Remove the sndhdr module (#104774)
Remove the Lib/test/sndhdrdata/ directory.
This commit is contained in:
parent
08d5923896
commit
7b00940f69
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@ -18,7 +18,6 @@
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*.zip binary
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# Specific binary files
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Lib/test/sndhdrdata/sndhdr.* binary
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PC/classicAppCompat.* binary
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# Text files that should not be subject to eol conversion
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@ -1,104 +0,0 @@
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:mod:`sndhdr` --- Determine type of sound file
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==============================================
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.. module:: sndhdr
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:synopsis: Determine type of a sound file.
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:deprecated:
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.. sectionauthor:: Fred L. Drake, Jr. <fdrake@acm.org>
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.. Based on comments in the module source file.
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**Source code:** :source:`Lib/sndhdr.py`
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.. index::
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single: A-LAW
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single: u-LAW
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.. deprecated-removed:: 3.11 3.13
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The :mod:`sndhdr` module is deprecated
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(see :pep:`PEP 594 <594#sndhdr>` for details and alternatives).
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--------------
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The :mod:`sndhdr` provides utility functions which attempt to determine the type
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of sound data which is in a file. When these functions are able to determine
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what type of sound data is stored in a file, they return a
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:func:`~collections.namedtuple`, containing five attributes: (``filetype``,
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``framerate``, ``nchannels``, ``nframes``, ``sampwidth``). The value for *type*
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indicates the data type and will be one of the strings ``'aifc'``, ``'aiff'``,
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``'au'``, ``'hcom'``, ``'sndr'``, ``'sndt'``, ``'voc'``, ``'wav'``, ``'8svx'``,
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``'sb'``, ``'ub'``, or ``'ul'``. The *sampling_rate* will be either the actual
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value or ``0`` if unknown or difficult to decode. Similarly, *channels* will be
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either the number of channels or ``0`` if it cannot be determined or if the
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value is difficult to decode. The value for *frames* will be either the number
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of frames or ``-1``. The last item in the tuple, *bits_per_sample*, will either
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be the sample size in bits or ``'A'`` for A-LAW or ``'U'`` for u-LAW.
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.. function:: what(filename)
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Determines the type of sound data stored in the file *filename* using
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:func:`whathdr`. If it succeeds, returns a namedtuple as described above, otherwise
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``None`` is returned.
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.. versionchanged:: 3.5
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Result changed from a tuple to a namedtuple.
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.. function:: whathdr(filename)
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Determines the type of sound data stored in a file based on the file header.
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The name of the file is given by *filename*. This function returns a namedtuple as
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described above on success, or ``None``.
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.. versionchanged:: 3.5
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Result changed from a tuple to a namedtuple.
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The following sound header types are recognized, as listed below with the return value
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from :func:`whathdr`: and :func:`what`:
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+------------+------------------------------------+
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| Value | Sound header format |
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+============+====================================+
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| ``'aifc'`` | Compressed Audio Interchange Files |
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+------------+------------------------------------+
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| ``'aiff'`` | Audio Interchange Files |
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+------------+------------------------------------+
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| ``'au'`` | Au Files |
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+------------+------------------------------------+
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| ``'hcom'`` | HCOM Files |
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+------------+------------------------------------+
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| ``'sndt'`` | Sndtool Sound Files |
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+------------+------------------------------------+
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| ``'voc'`` | Creative Labs Audio Files |
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+------------+------------------------------------+
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| ``'wav'`` | Waveform Audio File Format Files |
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+------------+------------------------------------+
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| ``'8svx'`` | 8-Bit Sampled Voice Files |
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+------------+------------------------------------+
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| ``'sb'`` | Signed Byte Audio Data Files |
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+------------+------------------------------------+
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| ``'ub'`` | UB Files |
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+------------+------------------------------------+
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| ``'ul'`` | uLAW Audio Files |
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+------------+------------------------------------+
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.. data:: tests
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A list of functions performing the individual tests. Each function takes two
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arguments: the byte-stream and an open file-like object. When :func:`what` is
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called with a byte-stream, the file-like object will be ``None``.
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The test function should return a string describing the image type if the test
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succeeded, or ``None`` if it failed.
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Example:
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.. code-block:: pycon
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>>> import sndhdr
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>>> imghdr.what('bass.wav')
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'wav'
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>>> imghdr.whathdr('bass.wav')
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'wav'
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@ -22,7 +22,6 @@ backwards compatibility. They have been superseded by other modules.
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optparse.rst
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ossaudiodev.rst
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pipes.rst
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sndhdr.rst
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spwd.rst
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sunau.rst
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uu.rst
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@ -1733,7 +1733,7 @@ Modules
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+---------------------+---------------------+---------------------+---------------------+---------------------+
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| :mod:`aifc` | :mod:`chunk` | :mod:`msilib` | :mod:`pipes` | :mod:`!telnetlib` |
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+---------------------+---------------------+---------------------+---------------------+---------------------+
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| :mod:`audioop` | :mod:`crypt` | :mod:`nis` | :mod:`sndhdr` | :mod:`uu` |
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| :mod:`audioop` | :mod:`crypt` | :mod:`nis` | :mod:`!sndhdr` | :mod:`uu` |
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+---------------------+---------------------+---------------------+---------------------+---------------------+
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| :mod:`!cgi` | :mod:`imghdr` | :mod:`nntplib` | :mod:`spwd` | :mod:`xdrlib` |
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+---------------------+---------------------+---------------------+---------------------+---------------------+
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@ -816,7 +816,7 @@ Modules (see :pep:`594`):
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* :mod:`nntplib`
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* :mod:`ossaudiodev`
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* :mod:`pipes`
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* :mod:`sndhdr`
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* :mod:`!sndhdr`
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* :mod:`spwd`
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* :mod:`sunau`
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* :mod:`!telnetlib`
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@ -147,6 +147,12 @@ Removed
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(Contributed by Victor Stinner in :gh:`104773`.)
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* :pep:`594`: Remove the :mod:`!sndhdr` module, deprecated in Python 3.11: use
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the projects `filetype <https://pypi.org/project/filetype/>`_, `puremagic
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<https://pypi.org/project/puremagic/>`_, or `python-magic
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<https://pypi.org/project/python-magic/>`_ instead.
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(Contributed by Victor Stinner in :gh:`104773`.)
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Porting to Python 3.13
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======================
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271
Lib/sndhdr.py
271
Lib/sndhdr.py
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"""Routines to help recognizing sound files.
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Function whathdr() recognizes various types of sound file headers.
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It understands almost all headers that SOX can decode.
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The return tuple contains the following items, in this order:
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- file type (as SOX understands it)
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- sampling rate (0 if unknown or hard to decode)
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- number of channels (0 if unknown or hard to decode)
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- number of frames in the file (-1 if unknown or hard to decode)
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- number of bits/sample, or 'U' for U-LAW, or 'A' for A-LAW
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If the file doesn't have a recognizable type, it returns None.
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If the file can't be opened, OSError is raised.
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To compute the total time, divide the number of frames by the
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sampling rate (a frame contains a sample for each channel).
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Function what() calls whathdr(). (It used to also use some
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heuristics for raw data, but this doesn't work very well.)
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Finally, the function test() is a simple main program that calls
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what() for all files mentioned on the argument list. For directory
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arguments it calls what() for all files in that directory. Default
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argument is "." (testing all files in the current directory). The
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option -r tells it to recurse down directories found inside
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explicitly given directories.
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"""
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import warnings
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warnings._deprecated(__name__, remove=(3, 13))
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# The file structure is top-down except that the test program and its
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# subroutine come last.
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__all__ = ['what', 'whathdr']
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from collections import namedtuple
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SndHeaders = namedtuple('SndHeaders',
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'filetype framerate nchannels nframes sampwidth')
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SndHeaders.filetype.__doc__ = ("""The value for type indicates the data type
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and will be one of the strings 'aifc', 'aiff', 'au','hcom',
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'sndr', 'sndt', 'voc', 'wav', '8svx', 'sb', 'ub', or 'ul'.""")
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SndHeaders.framerate.__doc__ = ("""The sampling_rate will be either the actual
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value or 0 if unknown or difficult to decode.""")
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SndHeaders.nchannels.__doc__ = ("""The number of channels or 0 if it cannot be
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determined or if the value is difficult to decode.""")
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SndHeaders.nframes.__doc__ = ("""The value for frames will be either the number
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of frames or -1.""")
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SndHeaders.sampwidth.__doc__ = ("""Either the sample size in bits or
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'A' for A-LAW or 'U' for u-LAW.""")
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def what(filename):
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"""Guess the type of a sound file."""
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res = whathdr(filename)
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return res
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def whathdr(filename):
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"""Recognize sound headers."""
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with open(filename, 'rb') as f:
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h = f.read(512)
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for tf in tests:
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res = tf(h, f)
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if res:
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return SndHeaders(*res)
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return None
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#-----------------------------------#
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# Subroutines per sound header type #
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#-----------------------------------#
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tests = []
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def test_aifc(h, f):
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"""AIFC and AIFF files"""
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', category=DeprecationWarning)
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import aifc
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if not h.startswith(b'FORM'):
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return None
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if h[8:12] == b'AIFC':
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fmt = 'aifc'
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elif h[8:12] == b'AIFF':
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fmt = 'aiff'
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else:
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return None
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f.seek(0)
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try:
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a = aifc.open(f, 'r')
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except (EOFError, aifc.Error):
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return None
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return (fmt, a.getframerate(), a.getnchannels(),
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a.getnframes(), 8 * a.getsampwidth())
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tests.append(test_aifc)
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def test_au(h, f):
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"""AU and SND files"""
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if h.startswith(b'.snd'):
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func = get_long_be
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elif h[:4] in (b'\0ds.', b'dns.'):
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func = get_long_le
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else:
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return None
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filetype = 'au'
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hdr_size = func(h[4:8])
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data_size = func(h[8:12])
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encoding = func(h[12:16])
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rate = func(h[16:20])
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nchannels = func(h[20:24])
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sample_size = 1 # default
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if encoding == 1:
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sample_bits = 'U'
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elif encoding == 2:
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sample_bits = 8
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elif encoding == 3:
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sample_bits = 16
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sample_size = 2
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else:
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sample_bits = '?'
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frame_size = sample_size * nchannels
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if frame_size:
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nframe = data_size / frame_size
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else:
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nframe = -1
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return filetype, rate, nchannels, nframe, sample_bits
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tests.append(test_au)
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def test_hcom(h, f):
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"""HCOM file"""
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if h[65:69] != b'FSSD' or h[128:132] != b'HCOM':
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return None
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divisor = get_long_be(h[144:148])
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if divisor:
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rate = 22050 / divisor
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else:
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rate = 0
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return 'hcom', rate, 1, -1, 8
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tests.append(test_hcom)
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def test_voc(h, f):
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"""VOC file"""
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if not h.startswith(b'Creative Voice File\032'):
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return None
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sbseek = get_short_le(h[20:22])
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rate = 0
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if 0 <= sbseek < 500 and h[sbseek] == 1:
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ratecode = 256 - h[sbseek+4]
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if ratecode:
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rate = int(1000000.0 / ratecode)
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return 'voc', rate, 1, -1, 8
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tests.append(test_voc)
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def test_wav(h, f):
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"""WAV file"""
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import wave
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# 'RIFF' <len> 'WAVE' 'fmt ' <len>
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if not h.startswith(b'RIFF') or h[8:12] != b'WAVE' or h[12:16] != b'fmt ':
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return None
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f.seek(0)
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try:
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w = wave.open(f, 'r')
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except (EOFError, wave.Error):
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return None
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return ('wav', w.getframerate(), w.getnchannels(),
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w.getnframes(), 8*w.getsampwidth())
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tests.append(test_wav)
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def test_8svx(h, f):
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"""8SVX file"""
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if not h.startswith(b'FORM') or h[8:12] != b'8SVX':
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return None
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# Should decode it to get #channels -- assume always 1
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return '8svx', 0, 1, 0, 8
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tests.append(test_8svx)
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def test_sndt(h, f):
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"""SNDT file"""
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if h.startswith(b'SOUND'):
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nsamples = get_long_le(h[8:12])
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rate = get_short_le(h[20:22])
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return 'sndt', rate, 1, nsamples, 8
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tests.append(test_sndt)
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def test_sndr(h, f):
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"""SNDR file"""
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if h.startswith(b'\0\0'):
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rate = get_short_le(h[2:4])
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if 4000 <= rate <= 25000:
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return 'sndr', rate, 1, -1, 8
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tests.append(test_sndr)
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#-------------------------------------------#
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# Subroutines to extract numbers from bytes #
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#-------------------------------------------#
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def get_long_be(b):
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return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3]
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def get_long_le(b):
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return (b[3] << 24) | (b[2] << 16) | (b[1] << 8) | b[0]
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def get_short_be(b):
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return (b[0] << 8) | b[1]
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def get_short_le(b):
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return (b[1] << 8) | b[0]
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#--------------------#
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# Small test program #
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#--------------------#
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def test():
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import sys
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recursive = 0
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if sys.argv[1:] and sys.argv[1] == '-r':
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del sys.argv[1:2]
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recursive = 1
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try:
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if sys.argv[1:]:
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testall(sys.argv[1:], recursive, 1)
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else:
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testall(['.'], recursive, 1)
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except KeyboardInterrupt:
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sys.stderr.write('\n[Interrupted]\n')
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sys.exit(1)
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def testall(list, recursive, toplevel):
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import sys
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import os
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for filename in list:
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if os.path.isdir(filename):
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print(filename + '/:', end=' ')
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if recursive or toplevel:
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print('recursing down:')
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import glob
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names = glob.glob(os.path.join(glob.escape(filename), '*'))
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testall(names, recursive, 0)
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else:
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print('*** directory (use -r) ***')
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else:
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print(filename + ':', end=' ')
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sys.stdout.flush()
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try:
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print(what(filename))
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except OSError:
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print('*** not found ***')
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if __name__ == '__main__':
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test()
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@ -1,5 +0,0 @@
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Sound file samples used by Lib/test/test_sndhdr.py and generated using the
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following commands:
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dd if=/dev/zero of=sndhdr.raw bs=20 count=1
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sox -s -2 -c 2 -r 44100 sndhdr.raw sndhdr.<format>
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@ -1,40 +0,0 @@
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import pickle
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import unittest
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from test.support import findfile
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from test.support import warnings_helper
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sndhdr = warnings_helper.import_deprecated("sndhdr")
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class TestFormats(unittest.TestCase):
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def test_data(self):
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for filename, expected in (
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('sndhdr.8svx', ('8svx', 0, 1, 0, 8)),
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('sndhdr.aifc', ('aifc', 44100, 2, 5, 16)),
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('sndhdr.aiff', ('aiff', 44100, 2, 5, 16)),
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('sndhdr.au', ('au', 44100, 2, 5.0, 16)),
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('sndhdr.hcom', ('hcom', 22050.0, 1, -1, 8)),
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('sndhdr.sndt', ('sndt', 44100, 1, 5, 8)),
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('sndhdr.voc', ('voc', 0, 1, -1, 8)),
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('sndhdr.wav', ('wav', 44100, 2, 5, 16)),
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):
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filename = findfile(filename, subdir="sndhdrdata")
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what = sndhdr.what(filename)
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self.assertNotEqual(what, None, filename)
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self.assertSequenceEqual(what, expected)
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self.assertEqual(what.filetype, expected[0])
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self.assertEqual(what.framerate, expected[1])
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self.assertEqual(what.nchannels, expected[2])
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self.assertEqual(what.nframes, expected[3])
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self.assertEqual(what.sampwidth, expected[4])
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def test_pickleable(self):
|
||||
filename = findfile('sndhdr.aifc', subdir="sndhdrdata")
|
||||
what = sndhdr.what(filename)
|
||||
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
|
||||
dump = pickle.dumps(what, proto)
|
||||
self.assertEqual(pickle.loads(dump), what)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
|
@ -2119,7 +2119,6 @@ TESTSUBDIRS= idlelib/idle_test \
|
|||
test/imghdrdata \
|
||||
test/leakers \
|
||||
test/libregrtest \
|
||||
test/sndhdrdata \
|
||||
test/subprocessdata \
|
||||
test/support \
|
||||
test/support/_hypothesis_stubs \
|
||||
|
|
|
@ -0,0 +1,2 @@
|
|||
:pep:`594`: Remove the :mod:`!sndhdr` module, deprecated in Python 3.11.
|
||||
Patch by Victor Stinner.
|
|
@ -236,7 +236,6 @@ static const char* _Py_stdlib_module_names[] = {
|
|||
"signal",
|
||||
"site",
|
||||
"smtplib",
|
||||
"sndhdr",
|
||||
"socket",
|
||||
"socketserver",
|
||||
"spwd",
|
||||
|
|
Loading…
Reference in New Issue