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Changes in TIFF v4.4.0
======================
.. table:: References
:widths: auto
====================== ==========================================
Current Version v4.4.0 (:tag:`v4.4.0`)
Previous Version :doc:`v4.3.0 <v4.3.0>`
Master Download Site `<https://download.osgeo.org/libtiff/>`_
Master HTTP Site #1 `<http://www.simplesystems.org/libtiff/>`_
Master HTTP Site #2 `<https://libtiff.gitlab.io/libtiff/>`_
Master HTTP Site #3 `<http://libtiff.maptools.org/>`_
====================== ==========================================
This document provides a summary of significant changes made to the
software between the *previous* and *current* versions (see
above). A fully-detailed change summary is provided by the :file:`ChangeLog` file
included in the release package and by the Git commit history:
Major changes
-------------
None
Software configuration changes
------------------------------
* Handle absolute paths in pkg-config file (:issue:`333`)
* Correct fix for the pkgconf file relative paths.
* cmake: allow running the tests with a read-only source directory.
* cmake: Fix ``STRIPCHOP_DEFAULT`` value in CMake builds.
* build: Fix static library imports in mingw related to LERC
* Fix version in :file:`libtiff-4.pc.in`, and CMake build: Add requirements to pc file
* cmake: Fix build with CMake 3.10.
* cmake: Export tiff targets.
* Make ``LERC_SUPPORT`` conditional on ``ZLIB_SUPPORT``
Library changes
---------------
New/improved functionalities:
* :c:func:`TIFFIsBigTiff` function added.
* Functions :c:func:`TIFFFieldSetGetSize()` and :c:func:`TIFFFieldSetGetCountSize()` added.
* :c:func:`LZWDecode`: major speed improvements (~30% faster)
* Predictor 2 (horizontal differenciation): support 64-bit
* Support libjpeg 9d
Bug fixes:
* Remove incorrect assert (:issue:`329`)
* avoid hang in :c:func:`TIFFRewriteDirectory` if a classic file > 4 GB is attempted to be created
* :file:`tif_jbig.c`: fix crash when reading a file with multiple IFD in memory-mapped mode and when bit reversal is needed (fixes :issue:`385`)
* :c:func:`TIFFFetchNormalTag`: avoid calling :c:func:`memcpy` with a null source pointer and size of zero (fixes :issue:`383`)
* :c:func:`TIFFWriteDirectoryTagData`: turn assertion on data length into a runtime check
* :c:func:`TIFFFetchStripThing`: avoid calling :c:func:`memcpy` with a null source pointer and size of zero (fixes :issue:`362`)
* :c:func:`TIFFReadDirectory`: avoid calling :c:func:`memcpy` with a null source pointer and size of zero (fixes :issue:`362`)
* :c:func:`TIFFYCbCrToRGBInit`: avoid Integer-overflow
* ``TIFFGetField(TIFFTAG_STRIPBYTECOUNTS/TIFFTAG_STRIPOFFSETS)``: return error if returned pointer is NULL (fixes :issue:`342`)
* OJPEG: avoid assertion when using :c:func:`TIFFReadScanline` (fixes :issue:`337`)
* :c:func:`TIFFReadDirectory`: fix OJPEG hack (fixes :issue:`319`)
* LZW codec: fix support for strips/tiles > 2 GB on Windows
* :c:func:`TIFFAppendToStrip`: fix rewrite-in-place logic (fixes :issue:`309`)
* Fix :c:func:`TIFFRewriteDirectory` discarding directories.
* :c:func:`TIFFReadCustomDirectory`: avoid crash when reading SubjectDistance tag on a non EXIF directory (:issue:`316`)
* Fix Segmentation fault printing GPS directory if ``Altitude`` tag is present
* :file:`tif_jpeg.c`: do not emit progressive scans with mozjpeg. (:issue:`266`)
* :c:func:`_TIFFRewriteField`: fix when writing a IFD with a single tile that is a sparse one, on big endian hosts
* Fix all remaining uses of legacy Deflate compression id and warn on use.
Tools changes
-------------
Bug fixes:
* :program:`tiffcrop`: Fix issue :issue:`330` and some more from 320 to 349.
* :program:`tiffcrop`: fix issue :issue:`395`: generation of strange section images.
* :program:`tiffcrop`: fix issue :issue:`380` and :issue:`382` heap buffer overflow in extractImageSection
* :program:`tiffcrop`: fix FPE (:issue:`393`)
* :program:`tiffcrop`: buffsize check formula in :c:func:`loadImage` amended (fixes :issue:`273`, :issue:`275`)
* :program:`tiffcrop.c`: Fix issue :issue:`352` heap-buffer-overflow by correcting :c:type:`uint32_t` underflow.
* :program:`tiff2pdf`: handle 8-bit palette colormap.
* :program:`tiffcp`: avoid buffer overflow in "mode" string (fixes :issue:`400`)
* :program:`tiffcp`: Fix incomprehensible setting of orientation tag (fixes :issue:`29`)
* :program:`tiffcp`: do not try to fetch compressor-specific tags when not appropriate (fixes :issue:`396`)
* :program:`tiffcp`: fix heap buffer overflow (:issue:`278`)
* :program:`tiff2ps`: In :c:func:`limitMalloc` check for negative size (fixes :issue:`284`)
* :program:`tiffinfo`: add a ``-M`` switch to define the maximum heap allocation, and default it to 256 MiB (fixes :issue:`287`, :issue:`290`)
* :program:`tiffinfo`: limit more memory allocations using ``-M`` switch (fixes :issue:`288`)
* :program:`tiffset`: fix global-buffer-overflow for ASCII tags where count is required (fixes :issue:`355`)
* :program:`raw2tiff`: check that band number if not zero to avoid floating point exception(fixes :issue:`338`)
* :program:`tiffinfo`/:program:`tiffdump`: improve output for GDAL tags.
Contributed software changes
----------------------------
None
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