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+<title>liblzma (XZ Utils): lzma_filter Struct Reference</title>
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+<a href="#pub-attribs">Data Fields</a> </div>
+ <div class="headertitle"><div class="title">lzma_filter Struct Reference</div></div>
+</div><!--header-->
+<div class="contents">
+
+<p>Filter options.
+ <a href="structlzma__filter.html#details">More...</a></p>
+
+<p><code>#include &lt;filter.h&gt;</code></p>
+<table class="memberdecls">
+<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="pub-attribs" name="pub-attribs"></a>
+Data Fields</h2></td></tr>
+<tr class="memitem:aef1d9709759f39e61db77547b2326929"><td class="memItemLeft" align="right" valign="top"><a class="el" href="vli_8h.html#a1dbc0ffc3e72748f64df8f7f71898272">lzma_vli</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structlzma__filter.html#aef1d9709759f39e61db77547b2326929">id</a></td></tr>
+<tr class="memdesc:aef1d9709759f39e61db77547b2326929"><td class="mdescLeft">&#160;</td><td class="mdescRight">Filter ID. <br /></td></tr>
+<tr class="separator:aef1d9709759f39e61db77547b2326929"><td class="memSeparator" colspan="2">&#160;</td></tr>
+<tr class="memitem:a10dfbaa1601793657d12320bef933ee6"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structlzma__filter.html#a10dfbaa1601793657d12320bef933ee6">options</a></td></tr>
+<tr class="memdesc:a10dfbaa1601793657d12320bef933ee6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Pointer to filter-specific options structure. <br /></td></tr>
+<tr class="separator:a10dfbaa1601793657d12320bef933ee6"><td class="memSeparator" colspan="2">&#160;</td></tr>
+</table>
+<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
+<div class="textblock"><p>Filter options. </p>
+<p>This structure is used to pass a Filter ID and a pointer to the filter's options to liblzma. A few functions work with a single <a class="el" href="structlzma__filter.html" title="Filter options.">lzma_filter</a> structure, while most functions expect a filter chain.</p>
+<p>A filter chain is indicated with an array of <a class="el" href="structlzma__filter.html" title="Filter options.">lzma_filter</a> structures. The array is terminated with .id = LZMA_VLI_UNKNOWN. Thus, the filter array must have LZMA_FILTERS_MAX + 1 elements (that is, five) to be able to hold any arbitrary filter chain. This is important when using <a class="el" href="block_8h.html#a7f5487c21a7b36a8bd17be36074d43c9" title="Decode Block Header.">lzma_block_header_decode()</a> from <a class="el" href="block_8h.html" title=".xz Block handling">block.h</a>, because a filter array that is too small would make liblzma write past the end of the array. </p>
+</div><h2 class="groupheader">Field Documentation</h2>
+<a id="aef1d9709759f39e61db77547b2326929" name="aef1d9709759f39e61db77547b2326929"></a>
+<h2 class="memtitle"><span class="permalink"><a href="#aef1d9709759f39e61db77547b2326929">&#9670;&#160;</a></span>id</h2>
+
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname"><a class="el" href="vli_8h.html#a1dbc0ffc3e72748f64df8f7f71898272">lzma_vli</a> lzma_filter::id</td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+
+<p>Filter ID. </p>
+<p>Use constants whose name begin with `LZMA_FILTER_' to specify different filters. In an array of <a class="el" href="structlzma__filter.html" title="Filter options.">lzma_filter</a> structures, use LZMA_VLI_UNKNOWN to indicate end of filters.</p>
+<dl class="section note"><dt>Note</dt><dd>This is not an enum, because on some systems enums cannot be 64-bit. </dd></dl>
+
+</div>
+</div>
+<a id="a10dfbaa1601793657d12320bef933ee6" name="a10dfbaa1601793657d12320bef933ee6"></a>
+<h2 class="memtitle"><span class="permalink"><a href="#a10dfbaa1601793657d12320bef933ee6">&#9670;&#160;</a></span>options</h2>
+
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">void* lzma_filter::options</td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+
+<p>Pointer to filter-specific options structure. </p>
+<p>If the filter doesn't need options, set this to NULL. If id is set to LZMA_VLI_UNKNOWN, options is ignored, and thus doesn't need be initialized. </p>
+
+</div>
+</div>
+<hr/>The documentation for this struct was generated from the following file:<ul>
+<li>lzma/<a class="el" href="filter_8h.html">filter.h</a></li>
+</ul>
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