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<section id="changes-in-tiff-v3-4beta016">
<h1>Changes in TIFF v3.4beta016<a class="headerlink" href="#changes-in-tiff-v3-4beta016" 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>v3.4beta016 (no release tag)</p></td>
</tr>
<tr class="row-even"><td><p>Previous Version</p></td>
<td><p><a class="reference internal" href="v3.4beta007.html"><span class="doc">v3.4beta007</span></a></p></td>
</tr>
<tr class="row-odd"><td><p>Master Download Site</p></td>
<td><p><a class="reference external" href="ftp://ftp.sgi.com/graphics/tiff/">ftp://ftp.sgi.com/graphics/tiff/</a></p></td>
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<p>This document describes the changes made to the software between the
<em>previous</em> and <em>current</em> versions (see above).
If you don’t find something listed here, then it was not done in this
timeframe, or it was not considered important enough to be mentioned.
The following information is located here:</p>
<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>support was added for configuring the Deflate codec</p></li>
<li><p>support was added for the HTML documentation</p></li>
<li><p>codecs that are not configured for inclusion in the library
are no longer compiled</p></li>
</ul>
</section>
<section id="library-changes">
<h2>Library changes<a class="headerlink" href="#library-changes" title="Permalink to this heading">¶</a></h2>
<ul class="simple">
<li><p>support was added for registering new codecs external to the library
and for overriding the codecs that are builtin to the library</p></li>
<li><p>emulation support for the old <code class="docutils literal notranslate"><span class="pre">DataType</span></code> tag was improved</p></li>
<li><p>support was added for the <code class="docutils literal notranslate"><span class="pre">SMinSampleValue</span></code>
and <code class="docutils literal notranslate"><span class="pre">SMaxSampleValue</span></code> tags</p></li>
<li><p>the library no longer ignores <code class="docutils literal notranslate"><span class="pre">TileWidth</span></code> and <code class="docutils literal notranslate"><span class="pre">TileLength</span></code>
tags whose values are not a multiple of 16 (per the spec); this
permits old, improperly written, images to be read</p></li>
<li><p>the support for the <code class="docutils literal notranslate"><span class="pre">Predictor</span></code> tag was placed in a reusable
module so that it can be shared by multiple codecs</p></li>
<li><p>experimental compression support was added for the Deflate algorithm
(using the freely available zlib package)</p></li>
<li><p>a new routine, <a class="reference internal" href="../functions/TIFFbuffer.html#c.TIFFWriteBufferSetup" title="TIFFWriteBufferSetup"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFWriteBufferSetup()</span></code></a> was added à la the
routine <a class="reference internal" href="../functions/TIFFbuffer.html#c.TIFFReadBufferSetup" title="TIFFReadBufferSetup"><code class="xref c c-func docutils literal notranslate"><span class="pre">TIFFReadBufferSetup()</span></code></a></p></li>
<li><p>the DSO version of the library is now statically linked with the
JPEG and Deflate libraries; this means applications that link against
the DSO do not also need to link against these ancillary libraries</p></li>
</ul>
</section>
<section id="tools-changes">
<h2>Tools changes<a class="headerlink" href="#tools-changes" title="Permalink to this heading">¶</a></h2>
<ul class="simple">
<li><p>all the tools now use common code to process compress-oriented arguments</p></li>
<li><p><strong class="program">tiffdump</strong> should now compile on a Macintosh with MPW</p></li>
</ul>
</section>
<section id="documentation-changes">
<h2>Documentation changes<a class="headerlink" href="#documentation-changes" title="Permalink to this heading">¶</a></h2>
<ul class="simple">
<li><p>everything was updated</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>
<ul class="simple">
<li><p><code class="file docutils literal notranslate"><span class="pre">contrib/dbs/xtiff</span></code> was made to compile</p></li>
<li><p><code class="file docutils literal notranslate"><span class="pre">contrib/mac-mpw</span></code> is new support for compiling the software on
a Macintosh under MPW</p></li>
<li><p><code class="file docutils literal notranslate"><span class="pre">contrib/tags</span></code> is information on how to use the tag extenion
facilities; consult <code class="file docutils literal notranslate"><span class="pre">contrib/tags/README</span></code> for details</p></li>
</ul>
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<h3><a href="../index.html">Table of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">Changes in TIFF v3.4beta016</a><ul>
<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="#documentation-changes">Documentation changes</a></li>
<li><a class="reference internal" href="#contributed-software-changes">Contributed software changes</a></li>
</ul>
</li>
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