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97 lines
3.0 KiB
ReStructuredText
97 lines
3.0 KiB
ReStructuredText
9.5.0
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-----
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Security
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========
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Clear PPM half token after use
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Image files that are small on disk are often prevented from expanding to be
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big images consuming a large amount of resources simply because they lack the
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data to populate those resources.
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PpmImagePlugin might hold onto the last data read for a pixel value in case the
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pixel value has not been finished yet. However, that data was not being cleared
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afterwards, meaning that infinite data could be available to fill any image
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size. This has been present since Pillow 9.2.0.
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That data is now cleared after use.
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Saving TIFF tag ImageSourceData
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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If Pillow incorrectly saved the TIFF tag ImageSourceData as ASCII instead of
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UNDEFINED, a segmentation fault was triggered.
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The correct tag type will now be used by default instead.
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Deprecations
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============
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PSFile
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^^^^^^
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The :py:class:`!PSFile` class has been deprecated and will
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be removed in Pillow 11 (2024-10-15). This class was only made as a helper to
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be used internally, so there is no replacement. If you need this functionality
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though, it is a very short class that can easily be recreated in your own code.
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API Additions
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=============
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QOI file format
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^^^^^^^^^^^^^^^
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Pillow can now read images in Quite OK Image format.
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Added ``dpi`` argument when saving PDFs
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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When saving a PDF, resolution could already be specified using the
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``resolution`` argument. Now, a tuple of ``(x_resolution, y_resolution)`` can
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be provided as ``dpi``. If both are provided, ``dpi`` will override
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``resolution``.
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Added ``corners`` argument to ``ImageDraw.rounded_rectangle()``
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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:py:meth:`.ImageDraw.rounded_rectangle` now accepts a keyword argument of
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``corners``. This a tuple of Booleans, specifying whether to round each corner,
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``(top_left, top_right, bottom_right, bottom_left)``.
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JPEG2000 comments and PLT marker
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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When opening a JPEG2000 image, the comment may now be read into
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:py:attr:`~PIL.Image.Image.info`. The ``comment`` keyword argument can be used
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to save it back again.
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If OpenJPEG 2.4.0 or later is available and the ``plt`` keyword argument
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is present and true when saving JPEG2000 images, tell the encoder to generate
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PLT markers.
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Other Changes
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=============
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Added support for saving PDFs in RGBA mode
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Using the JPXDecode filter, PDFs can now be saved in RGBA mode.
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Improved I;16N support
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^^^^^^^^^^^^^^^^^^^^^^
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Support has been added for I;16N access, packing and unpacking. Conversion to
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and from L mode has also been added.
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BGR;* modes
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^^^^^^^^^^^
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It is now possible to create new BGR;15, BGR;16 and BGR;24 images. Conversely, BGR;32
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has been removed from ImageMode and its associated methods, dropping the little support
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Pillow had for the mode.
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With that, all modes listed under :ref:`concept-modes` can now be used to create a new
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image.
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