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Added release notes

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AnonymouX47 2022-02-20 22:08:27 +01:00
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docs/releasenotes/9.1.0.rst
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@ -121,6 +121,34 @@ can be used to return data in the current mode of the palette.
Other Changes Other Changes
============= =============
GifImagePlugin seek-related optimizations
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Optimized :py:meth:`~PIL.GifImagePlugin.seek()`,
:py:property:`~PIL.GifImagePlugin.n_frames` and
:py:property:`~PIL.GifImagePlugin.is_animated` when seeking back to the *current* frame
before invoking the operation, after an ``EOFError`` is raised.
These operations no longer have to seek back to **frame 0** before seeking forward,
instead they seek back to the frame just before the *current* frame and then seek
just one frame forward.
Eliminated seek checks while computing :py:property:`~PIL.GifImagePlugin.n_frames`
by using :py:meth:`PIL.GifImagePlugin._seek()` in place of
:py:meth:`~PIL.GifImagePlugin.seek()` since the frame numbers cannot be invalid until
the final one, which raises ``EOFError``.
When an ``EOFError`` is raised within :py:meth:`~PIL.GifImagePlugin.seek()` i.e just
seeked past the last frame, ``self._n_frames`` is updated if it hadn't been updated
earlier, to prevent re-computation when :py:property:`~PIL.GifImagePlugin.n_frames` is
later invoked.
Added ``self.__prev_offset`` to always hold the offset of the frame just before the
current frame.
Replaced all internal calls to :py:meth:`~PIL.GifImagePlugin.tell()` with direct
references to ``self.__frame``.
ImageShow temporary files on Unix ImageShow temporary files on Unix
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^