author | martin.trojer@nokia.com |
Fri, 31 Jul 2009 15:01:17 +0100 | |
changeset 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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# Copyright (C) 2001-2006 Python Software Foundation |
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# Author: Anthony Baxter |
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# Contact: email-sig@python.org |
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"""Class representing audio/* type MIME documents.""" |
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__all__ = ['MIMEAudio'] |
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import sndhdr |
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from cStringIO import StringIO |
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from email import encoders |
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from email.mime.nonmultipart import MIMENonMultipart |
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_sndhdr_MIMEmap = {'au' : 'basic', |
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'wav' :'x-wav', |
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'aiff':'x-aiff', |
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'aifc':'x-aiff', |
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} |
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# There are others in sndhdr that don't have MIME types. :( |
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# Additional ones to be added to sndhdr? midi, mp3, realaudio, wma?? |
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def _whatsnd(data): |
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"""Try to identify a sound file type. |
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sndhdr.what() has a pretty cruddy interface, unfortunately. This is why |
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we re-do it here. It would be easier to reverse engineer the Unix 'file' |
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command and use the standard 'magic' file, as shipped with a modern Unix. |
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""" |
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hdr = data[:512] |
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fakefile = StringIO(hdr) |
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for testfn in sndhdr.tests: |
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res = testfn(hdr, fakefile) |
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if res is not None: |
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return _sndhdr_MIMEmap.get(res[0]) |
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return None |
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class MIMEAudio(MIMENonMultipart): |
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"""Class for generating audio/* MIME documents.""" |
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def __init__(self, _audiodata, _subtype=None, |
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_encoder=encoders.encode_base64, **_params): |
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"""Create an audio/* type MIME document. |
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_audiodata is a string containing the raw audio data. If this data |
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can be decoded by the standard Python `sndhdr' module, then the |
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subtype will be automatically included in the Content-Type header. |
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Otherwise, you can specify the specific audio subtype via the |
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_subtype parameter. If _subtype is not given, and no subtype can be |
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guessed, a TypeError is raised. |
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_encoder is a function which will perform the actual encoding for |
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transport of the image data. It takes one argument, which is this |
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Image instance. It should use get_payload() and set_payload() to |
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change the payload to the encoded form. It should also add any |
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Content-Transfer-Encoding or other headers to the message as |
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necessary. The default encoding is Base64. |
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Any additional keyword arguments are passed to the base class |
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constructor, which turns them into parameters on the Content-Type |
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header. |
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""" |
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if _subtype is None: |
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_subtype = _whatsnd(_audiodata) |
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if _subtype is None: |
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raise TypeError('Could not find audio MIME subtype') |
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MIMENonMultipart.__init__(self, 'audio', _subtype, **_params) |
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self.set_payload(_audiodata) |
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_encoder(self) |