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Changes in TIFF v4.7.1
======================
.. table :: References
:widths: auto
:tag: `v4.7.1` )
:doc: `v4.7.0 <v4.7.0>`
`<https://download.osgeo.org/libtiff/>`_
`<http://www.simplesystems.org/libtiff/>`_
`<https://libtiff.gitlab.io/libtiff/>`_
*previous* and *current* versions (see
:file: `ChangeLog` file
Major changes
-------------
Software configuration changes
------------------------------
* Define HAVE_JPEGTURBO_DUAL_MODE_8_12 and LERC_STATIC in tif_config.h.
* CMake: define WORDS_BIGENDIAN via tif_config.h
* doc/CMakeLists.txt: remove useless cmake_minimum_required()
* CMake: fix build with LLVM/Clang 17 (fixes :issue: `651` )
* CMake: set CMP0074 new policy
* Set LINKER_LANGUAGE for C targets with C deps
* Export tiffxx cmake target (fixes :issue: `674` )
* autogen.sh: Enable verbose wget.
* configure.ac: Syntax updates for Autoconf 2.71
* autogen.sh: Re-implement based on autoreconf. Failure to update
:issue: `672` )
* CMake: fix CMake 4.0 warning when minimum required version is < 3.10.
* CMake: Add build option tiff-static (fixes :issue: `709` )
Library changes
---------------
* Add TIFFOpenOptionsSetWarnAboutUnknownTags() for explicit control about
* tif_predict.c: speed-up decompression in some cases.
* None
* tif_fax3: For fax group 3 data if no EOL is detected, reading is retried
:issue: `54` )
* Updating TIFFMergeFieldInfo() with read_count=write_count=0 for FIELD_IGNORE.
:issue: `532` )
* tiff.h: add COMPRESSION_JXL_DNG_1_7=52546 as used for JPEGXL compression in
* TIFFWriteDirectorySec: Increment string length for ASCII tags for codec tags
:issue: `648` )
* Do not error out on a tag whose tag count value is zero, just issue a warning.
:issue: `647` )
* TIFFDefaultTransferFunction(): give up beyond td_bitspersample = 24
* tif_getimage.c: Remove unnecessary calls to TIFFRGBAImageOK()
:issue: `175` )
* Fix writing a Predictor=3 file with non-native endianness
* _TIFFVSetField(): fix potential use of unallocated memory (out-of-bounds
:issue: `663` )
* tif_fax3.c: Error out for CCITT fax encoding if SamplesPerPixel is not equal
:issue: `26` )
* tif_fax3.c: error out after a number of times end-of-line or unexpected bad
:issue: `670` )
* Fix memory leak in TIFFSetupStrips() (fixes :issue: `665` )
* tif_zip.c: Provide zlib allocation functions.
* Fix memory leak in _TIFFSetDefaultCompressionState. (fixes :issue: `676` )
* tif_predict.c: Don’
:issue: `5` )
* tif_getimage.c: update some integer overflow checks (fixes :issue: `79` )
* tif_getimage.c: Fix buffer underflow crash for less raster rows at
:issue: `704` )
* TIFFReadRGBAImage(): several fixes to avoid buffer overflows.
* Correct passing arguments to TIFFCvtIEEEFloatToNative() and
:issue: `699` )
* LZWDecode(): avoid nullptr dereference when trying to read again after EOI
:issue: `698` )
* TIFFSetSubDirectory(): check _TIFFCheckDirNumberAndOffset() return.
* TIFFUnlinkDirectory() and TIFFWriteDirectorySec(): clear tif_rawcp when
:issue: `711` )
* JPEGEncodeRaw(): error out if a previous scanline failed to be written, to
:issue: `714` )
* tif_jpeg: Fix bug in JPEGDecodeRaw() if JPEG_LIB_MK1_OR_12BIT is defined for
:issue: `717` )
* add assert for TIFFReadCustomDirectory infoarray check.
* tif_jpeg.c: use JPEG_MAX_DIMENSION constant instead of hard-coded 65535 value
* tif_lzw.c / tif_packbits.c: use NULL instead of 0.
* Take into account PACKBITS_READ_ONLY, LZW_READ_ONLY, and LERC_READ_ONLY
* tif_lerc.c: add missing casts
* Merge several functions implemented twice in different modules.
:issue: `154` )
* Remove get_field_type form TIFFField structure because it is not used
* Silence some Coverity Scan warnigs and mark already dismissed ones.
* References to codec libraries updated and missing codec compile defines
* Move mkg3states under libtiff/tools. (fixes :issue: `708` )
* tiff_itrunc(): don't use rand() to please Coverity Scan.
* tiffio.h: fix compilation with LOGLUV_PUBLIC=0
* LICENSE.md: Add BSD license for Lempel-Ziv & Welch compression (tif_lzw.c)
:issue: `431` )
Documentation
-------------
* TIFFRGBAImage.rst note added for incorrect saving of images with TIFF
* TIFFRGBAImage.rst note added about un-associated alpha handling
:issue: `67` )
* Update "Defining New TIFF Tags" description. (fixes :issue: `642` )
* Fix return type of TIFFReadEncodedTile()
* Update the documentation to reflect deprecated typedefs.
* TIFFWriteDirectory.rst: Clarify TIFFSetWriteOffset() only sets offset for
* Update documentation on re-entrancy and thread safety.
* Remove dead links to no more existing Awaresystems web-site.
* Updating BigTIFF specification and some miscelaneous editions.
* Replace some last links and remove last todos.
* Added hints for correct allocation of TIFFYCbCrtoRGB structure and its
:issue: `681` )
* Added chapter to "Using the TIFF Library" with links to handling multi-page
:issue: `43` )
* update TIFFOpen.rst with the return values of mapproc and unmapproc.
:issue: `12` )
Tools changes
-------------
* tiffinfo: add a -W switch to warn about unknown tags.
* tiffdither: process all pages in input TIFF file.
* ppm2tiff: Fix bug in `pack_words`
:issue: `467` )
* fax2ps: fix regression of commit 28c38d648b64a66c3218778c4745225fe3e3a06d
:issue: `649` )
* tiff2pdf: Check TIFFTAG_TILELENGTH and TIFFTAGTILEWIDTH (fixes :issue: `650` )
* tiff2pdf: check h_samp and v_samp for range 1 to 4 to avoid division by
:issue: `654` )
* tiff2pdf: avoid null pointer dereference. (fixes :issue: `741` )
* Improve non-secure integer overflow check (comparison of division result
:issue: `546` )
* tiff2rgba: fix some "a partial expression can generate an overflow before it
:issue: `682` )
* tiffdither/tiffmedian: Don't skip the first line of the input image.
:issue: `703` )
* tiffdither: avoid out-of-bounds read identified in :issue: `733`
* tiffmedian: error out if TIFFReadScanline() fails (fixes :issue: `707` )
* tiffmedian: close input file. (fixes :issue: `735` )
* thumbail: avoid potential out of bounds access (fixes :issue: `715` )
* tiffcrop: close open TIFF files and release allocated buffers before exiting
:issue: `716` )
* tiffcrop: fix double-free and memory leak exposed by :issue: `721`
* tiffcrop: avoid buffer overflow. (fixes :issue: `740` )
* tiffcrop: avoid nullptr dereference. (fixes :issue: `734` )
* tiffdump: Fix coverity scan issue CID 1373365: Passing tainted expression
* tiff2ps: check return of TIFFGetFiled() for TIFFTAG_STRIPBYTECOUNTS and
:issue: `718` )
* tiffcmp: fix memory leak when second file cannot be opened.
:issue: `718` and :issue: `729` )
* tiffcp: fix setting compression level for lossless codecs.
:issue: `730` )
* raw2tiff: close input file before exit (fixes :issue: `742` )
Changes to contributed and unsupported tools
--------------------------------------------
* addtiffo: Fixing MSVC compiler warnings
* Improved oss-fuzz fuzzer tiff_read_rgba_fuzzer.cc.
* oss-fuzz: fix memory leak in fuzz target.
Even Rouault