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<section id="changes-in-tiff-v4-5-0">
<h1>Changes in TIFF v4.5.0<a class="headerlink" href="#changes-in-tiff-v4-5-0" title="Permalink to this heading">¶</a></h1>
<table class="docutils align-default" id="id1">
<caption><span class="caption-text">References</span><a class="headerlink" href="#id1" title="Permalink to this table">¶</a></caption>
<tbody>
<tr class="row-odd"><td><p>Current Version</p></td>
<td><p>v4.5.0 (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/tags/v4.5.0">tag v4.5.0</a>)</p></td>
</tr>
<tr class="row-even"><td><p>Previous Version</p></td>
<td><p><a class="reference internal" href="v4.4.0.html"><span class="doc">v4.4.0</span></a></p></td>
</tr>
<tr class="row-odd"><td><p>Master Download Site</p></td>
<td><p><a class="reference external" href="https://download.osgeo.org/libtiff/">https://download.osgeo.org/libtiff/</a></p></td>
</tr>
<tr class="row-even"><td><p>Master HTTP Site #1</p></td>
<td><p><a class="reference external" href="http://www.simplesystems.org/libtiff/">http://www.simplesystems.org/libtiff/</a></p></td>
</tr>
<tr class="row-odd"><td><p>Master HTTP Site #2</p></td>
<td><p><a class="reference external" href="https://libtiff.gitlab.io/libtiff/">https://libtiff.gitlab.io/libtiff/</a></p></td>
</tr>
<tr class="row-even"><td><p>Master HTTP Site #3</p></td>
<td><p><a class="reference external" href="http://libtiff.maptools.org/">http://libtiff.maptools.org/</a></p></td>
</tr>
</tbody>
</table>
<p>This document provides a summary of significant changes made to the
software between the <em>previous</em> and <em>current</em> versions (see
above). A fully-detailed change summary is provided by the <code class="file docutils literal notranslate"><span class="pre">ChangeLog</span></code> file
included in the release package and by the Git commit history:</p>
<section id="major-changes">
<h2>Major changes<a class="headerlink" href="#major-changes" title="Permalink to this heading">¶</a></h2>
<ul class="simple">
<li><p>Whole code base reformatting of .c/.h files using new .clang-format format</p></li>
<li><p>Documentation changed from static HTML and man pages to Restructured Text
(rst). HTML and man pages are now build artifacts.</p></li>
</ul>
</section>
<section id="software-configuration-changes">
<h2>Software configuration changes<a class="headerlink" href="#software-configuration-changes" title="Permalink to this heading">¶</a></h2>
<ul class="simple">
<li><p>SONAME version bumped to 6 due to changes in symbol versioning.</p></li>
<li><p>autoconf/cmake: detect (not yet released) libjpeg-turbo 2.2 to take into
its capability of handling both 8-bit JPEG and 12-bit JPEG in a single build.</p></li>
<li><p>autoconf/cmake: detect sphinx-build to build HTML and man pages</p></li>
<li><p>CMakeLists.txt: fix warning with -Wdev</p></li>
<li><p>CMake: correctly set default value of ‘lzma’ option when liblzma is detected
(<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/482">issue #482</a>)</p></li>
<li><p>CMake: Moved linking of CMath::CMath into CMath_LIBRARY check.</p></li>
<li><p>Fix CMake build to be compatible with FetchContent.</p></li>
<li><p>cmake: Correct duplicate definition of _CRT_SECURE_NO_WARNINGS (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/443">issue #443</a>)</p></li>
<li><p>cmake: Fixes for Visual Studio 2022.</p></li>
<li><p>Adds Requires.private generation so that pkg-config can correctly find
the dependencies of libtiff.</p></li>
<li><p>Fix dependency on libm on Android</p></li>
<li><p>cmake: libtiffxx is static on win32</p></li>
<li><p>Fix build in tif_lzw.c</p></li>
<li><p>CMake: Add options for disabling tools, tests, contrib and docs.</p></li>
</ul>
</section>
<section id="library-changes">
<h2>Library changes<a class="headerlink" href="#library-changes" title="Permalink to this heading">¶</a></h2>
<p>New/improved functionalities:</p>
<ul class="simple">
<li><p>Addition of an open option concept with the new functions
<a class="reference internal" href="../functions/TIFFOpen.html#c.TIFFOpenExt" title="TIFFOpenExt"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFOpenExt()</span></code></a>, <a class="reference internal" href="../functions/TIFFOpen.html#c.TIFFOpenWExt" title="TIFFOpenWExt"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFOpenWExt()</span></code></a>, <a class="reference internal" href="../functions/TIFFOpen.html#c.TIFFFdOpenExt" title="TIFFFdOpenExt"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFFdOpenExt()</span></code></a>,
<a class="reference internal" href="../functions/TIFFOpen.html#c.TIFFClientOpenExt" title="TIFFClientOpenExt"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFClientOpenExt()</span></code></a>, <a class="reference internal" href="../functions/TIFFOpenOptions.html#c.TIFFOpenOptionsAlloc" title="TIFFOpenOptionsAlloc"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFOpenOptionsAlloc()</span></code></a>,
<a class="reference internal" href="../functions/TIFFOpenOptions.html#c.TIFFOpenOptionsFree" title="TIFFOpenOptionsFree"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFOpenOptionsFree()</span></code></a></p></li>
<li><p>Leveraging above mentioned open option concept, addition of a new capability
to limit the size of a single dynamic memory allocation done
by the library with <a class="reference internal" href="../functions/TIFFOpenOptions.html#c.TIFFOpenOptionsSetMaxSingleMemAlloc" title="TIFFOpenOptionsSetMaxSingleMemAlloc"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFOpenOptionsSetMaxSingleMemAlloc()</span></code></a></p></li>
<li><p>Leveraging above mentioned open option concept, addition of a new capability
to specify per-TIFF handle re-entrant error and warning callbacks
with <a class="reference internal" href="../functions/TIFFOpenOptions.html#c.TIFFOpenOptionsSetErrorHandlerExtR" title="TIFFOpenOptionsSetErrorHandlerExtR"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFOpenOptionsSetErrorHandlerExtR()</span></code></a> and
<a class="reference internal" href="../functions/TIFFOpenOptions.html#c.TIFFOpenOptionsSetWarningHandlerExtR" title="TIFFOpenOptionsSetWarningHandlerExtR"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFOpenOptionsSetWarningHandlerExtR()</span></code></a></p></li>
<li><p>Related to IFD-Loop detection refactoring, the number of IFDs that libtiff
can browse through has been extended from 65535 to 1048576. This value is
a build-time setting that can be configured with CMake’s TIFF_MAX_DIR_COUNT
variable or autoconf’s –with-max-dir-count option.</p></li>
</ul>
<p>API/ABI breaks:</p>
<ul class="simple">
<li><p>tdir_t type updated to uint32_t. This type is now used for the return value of
<a class="reference internal" href="../functions/TIFFquery.html#c.TIFFCurrentDirectory" title="TIFFCurrentDirectory"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFCurrentDirectory()</span></code></a> and <a class="reference internal" href="../functions/TIFFquery.html#c.TIFFNumberOfDirectories" title="TIFFNumberOfDirectories"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFNumberOfDirectories()</span></code></a>, and
as the argument of <a class="reference internal" href="../functions/TIFFSetDirectory.html#c.TIFFSetDirectory" title="TIFFSetDirectory"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFSetDirectory()</span></code></a> and <a class="reference internal" href="../functions/TIFFCreateDirectory.html#c.TIFFUnlinkDirectory" title="TIFFUnlinkDirectory"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFUnlinkDirectory()</span></code></a></p></li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li><p>TIFFWriteRawStrip(): restore capabilities to append data in the current strip
(<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/489">issue #489</a>)</p></li>
<li><p>_TIFFReadEncodedTileAndAllocBuffer(): avoid excessive memory allocation on
broken files (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/479">issue #479</a>)</p></li>
<li><p>TIFFReadRGBATileExt(): fix (unsigned) integer overflow on strips/tiles > 2 GB
(oss-fuzz #53137)</p></li>
<li><p>Replace sprintf calls with snprintf to fix warnings on macOS 13 SDK</p></li>
<li><p>Added warning messages for FIELD_IGNORE tags for writing and for
TIFF_SETGET_UNDEFINED for reading added. (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/438">issue #438</a>)</p></li>
<li><p>tif_dirinfo.c: fix TIFFTAG_CLIPPATH tag declaration (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/439">issue #439</a>)</p></li>
<li><p>tif_dirinfo.c: fix TIFFTAG_COMPRESSION and _BITSPERSAMPLE tag declaration
(<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/364">issue #364</a>)</p></li>
<li><p>Revised handling of TIFFTAG_INKNAMES and related TIFFTAG_NUMBEROFINKS value
(<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/149">issue #149</a>, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/150">issue #150</a>, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/152">issue #152</a>, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/168">issue #168</a>, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/250">issue #250</a>,
<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/269">issue #269</a>,:issue:<cite>398</cite>, CVE-2022-3599, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/456">issue #456</a>)</p></li>
<li><p>TIFFAdvanceDirectory(): fix unsigned-integer-overflow in mapped case
(oss-fuzz #52309)</p></li>
<li><p>Improved/fixes IFD-Loop Handling (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/455">issue #455</a>).</p></li>
<li><p>Update getimage to support large raster images.</p></li>
<li><p>Presetting of default tag values extended (e.g. PlanarConfig). (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/449">issue #449</a>)</p></li>
<li><p>Deal with RichTIFFIPTC tag written with LONG type (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/225">issue #225</a>)</p></li>
<li><p>TIFFSetValue(): Writing IFD8 & LONG8 tags to ClassicTIFF corrected
(<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/442">issue #442</a>)</p></li>
<li><p>tif_jpeg.c: allow to pass -DEXPECTED_JPEG_LIB_VERSION=number to do optional
compile-time version check</p></li>
<li><p>TIFFReadFromUserBuffer(): fix clearing of TIFF_CODERSETUP flag that could
cause issues with reading JPEG compressed files</p></li>
<li><p>_TIFFCheckFieldIsValidForCodec(): return FALSE when passed a codec-specific
tag and the codec is not configured (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/433">issue #433</a>, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/486">issue #486</a>,
CVE-2022-34526)</p></li>
<li><p>Add basic 16 bit cielab support.</p></li>
<li><p>WEBP codec: avoid temporary buffer and memcpy() on whole tile/strip decoding</p></li>
<li><p>tif_predict.c: make horAcc8() work with icc (ICC) 2021.6.0 20220226 -O2</p></li>
</ul>
</section>
<section id="tools-changes">
<h2>Tools changes<a class="headerlink" href="#tools-changes" title="Permalink to this heading">¶</a></h2>
<p>New/improved functionality:</p>
<ul class="simple">
<li><p><strong class="program">tiffinfo</strong>: Updated to parse through SubIFDs and show their tags.</p></li>
</ul>
<p>Bug fixes:</p>
<ul class="simple">
<li><p><strong class="program">tiffcrop</strong>: add check if (bps != 1) in writeSingleSection()
(<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/169">issue #169</a>)</p></li>
<li><p><strong class="program">tiffcrop</strong>: Fix too many ‘mode’ options on command line
(<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/470">issue #470</a> and <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/450">issue #450</a>)</p></li>
<li><p><strong class="program">tiffcrop</strong>: Fix memory allocation to require a larger buffer
(<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/271">issue #271</a>, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/381">issue #381</a>, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/386">issue #386</a>, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/388">issue #388</a>, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/389">issue #389</a>,
<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/435">issue #435</a>, CVE-2022-3570, CVE-2022-3598)</p></li>
<li><p><strong class="program">tiffcrop</strong>: disable incompatibility of -Z, -X, -Y, -z options with
any PAGE_MODE_x option (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/411">issue #411</a>, CVE-2022-3627, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/413">issue #413</a>,
CVE-2022-3597, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/426">issue #426</a>, CVE-2022-3626)</p></li>
<li><p><strong class="program">tiffcrop</strong>: -S option mutually exclusive (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/349">issue #349</a>,
<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/414">issue #414</a>, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/422">issue #422</a>, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/423">issue #423</a>, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/424">issue #424</a>)</p></li>
<li><p><strong class="program">tiffcrop</strong>: fix floating-point exception (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/415">issue #415</a>,
<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/427">issue #427</a>, <a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/428">issue #428</a>, CVE-2022-2056, CVE-2022-2057, CVE-2022-2058)</p></li>
<li><p><strong class="program">tiff2pdf</strong>: Don’t try to seek into stdout (<a class="reference external" href="https://gitlab.com/libtiff/libtiff/-/issues/441">issue #441</a>)</p></li>
<li><p><strong class="program">tiffinfo</strong>: update curdir from uint16_t to tdir_t for more than 64k
IFD handling.</p></li>
</ul>
</section>
<section id="contributed-software-changes">
<h2>Contributed software changes<a class="headerlink" href="#contributed-software-changes" title="Permalink to this heading">¶</a></h2>
<p>None</p>
</section>
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<h3><a href="../index.html">Table of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">Changes in TIFF v4.5.0</a><ul>
<li><a class="reference internal" href="#major-changes">Major changes</a></li>
<li><a class="reference internal" href="#software-configuration-changes">Software configuration changes</a></li>
<li><a class="reference internal" href="#library-changes">Library changes</a></li>
<li><a class="reference internal" href="#tools-changes">Tools changes</a></li>
<li><a class="reference internal" href="#contributed-software-changes">Contributed software changes</a></li>
</ul>
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