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:param value: either an integer numerator, a
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dd Z dd Z dd Z dd Zdd Zdd Zdd Zd d Zd d Zd d! Zd"d# Zd$d% Zd&d' Zd(d) Zeeeej d*d+fej d,d-fej d.d/fej d0d1fej d2d3fej!d4d5fej"d6d7fej#d,d-fej$d8d9fg ed:d:d_d<d=Z%ed:d>d? Z&ed@d:d`dAdBZ'ed@dCdD Z(edEdFdadGdHZ)edEdIdJ Z*edKd:dbdLdMZ+edKdNdO Z,edPdFdcdQdRZ-edPdSdT Z.dUdV Z/dWdX Z0dddZd[Z1d\d] Z2dS )eÚImageFileDirectory_v2a This class represents a TIFF tag directory. To speed things up, we
|
don't decode tags unless they're asked for.
|
|
Exposes a dictionary interface of the tags in the directory::
|
|
ifd = ImageFileDirectory_v2()
|
ifd[key] = 'Some Data'
|
ifd.tagtype[key] = TiffTags.ASCII
|
print(ifd[key])
|
'Some Data'
|
|
Individual values are returned as the strings or numbers, sequences are
|
returned as tuples of the values.
|
|
The tiff metadata type of each item is stored in a dictionary of
|
tag types in
|
:attr:`~PIL.TiffImagePlugin.ImageFileDirectory_v2.tagtype`. The types
|
are read from a tiff file, guessed from the type added, or added
|
manually.
|
|
Data Structures:
|
|
* ``self.tagtype = {}``
|
|
* Key: numerical TIFF tag number
|
* Value: integer corresponding to the data type from
|
:py:data:`.TiffTags.TYPES`
|
|
.. versionadded:: 3.0.0
|
|
'Internal' data structures:
|
|
* ``self._tags_v2 = {}``
|
|
* Key: numerical TIFF tag number
|
* Value: decoded data, as tuple for multiple values
|
|
* ``self._tagdata = {}``
|
|
* Key: numerical TIFF tag number
|
* Value: undecoded byte string from file
|
|
* ``self._tags_v1 = {}``
|
|
* Key: numerical TIFF tag number
|
* Value: decoded data in the v1 format
|
|
Tags will be found in the private attributes ``self._tagdata``, and in
|
``self._tags_v2`` once decoded.
|
|
``self.legacy_api`` is a value for internal use, and shouldn't be changed
|
from outside code. In cooperation with
|
:py:class:`~PIL.TiffImagePlugin.ImageFileDirectory_v1`, if ``legacy_api``
|
is true, then decoded tags will be populated into both ``_tags_v1`` and
|
``_tags_v2``. ``_tags_v2`` will be used if this IFD is used in the TIFF
|
save routine. Tags should be read from ``_tags_v1`` if
|
``legacy_api == true``.
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|
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|
as the 'prefix' keyword argument.
|
|
:param ifh: One of the accepted magic headers (cf. PREFIXES); also sets
|
endianness.
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:param prefix: Override the endianness of the file.
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:returns: dict of name|key: value
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Returns the complete tag dictionary, with named tags where possible.
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ifd = ImageFileDirectory_v1()
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ifd[key] = 'Some Data'
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ifd.tagtype[key] = TiffTags.ASCII
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print(ifd[key])
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('Some Data',)
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Also contains a dictionary of tag types as read from the tiff image file,
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.. deprecated:: 3.0.0
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instance with the same data as is contained in the original
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instance.
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