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Dirac - A Video Codec
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Created by the <a href="http://www.bbc.co.uk">British Broadcasting Corporation</a>.
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<div class="navpath"><a class="el" href="a00234.html">dirac</a>::<a class="el" href="a00026.html">Context</a>
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<h1>dirac::Context Class Reference</h1><!-- doxytag: class="dirac::Context" --><code>#include <<a class="el" href="a00161_source.html">arith_codec.h</a>></code>
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<a href="a00274.html">List of all members.</a><h2>Public Member Functions</h2>
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<li><a class="el" href="a00026.html#7700773e0fc8a5cc6d52f762cf6f6bed">Context</a> ()
<dl class="el"><dd class="mdescRight">Default Constructor. <a href="#7700773e0fc8a5cc6d52f762cf6f6bed"></a><br></dl><li>unsigned int <a class="el" href="a00026.html#2e169fe721a59bddbd28a906b9dc17ea">GetScaledProb0</a> () const
<dl class="el"><dd class="mdescRight">Returns estimate of probability of 0 (false) scaled to 2**16. <a href="#2e169fe721a59bddbd28a906b9dc17ea"></a><br></dl><li>void <a class="el" href="a00026.html#4c7c472be34ced9c8fe69655c634bf0e">Update</a> (bool symbol)
<dl class="el"><dd class="mdescRight">Updates context counts. <a href="#4c7c472be34ced9c8fe69655c634bf0e"></a><br></dl></ul>
<h2>Private Attributes</h2>
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<li>int <a class="el" href="a00026.html#811817929c5649f4122217e7a439224e">m_prob0</a>
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<h2>Static Private Attributes</h2>
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<li>static const unsigned int <a class="el" href="a00026.html#890205dc2ebcec3471edfd3d946e49b2">lut</a> [256]
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<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="7700773e0fc8a5cc6d52f762cf6f6bed"></a><!-- doxytag: member="dirac::Context::Context" ref="7700773e0fc8a5cc6d52f762cf6f6bed" args="()" -->
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<td class="memname">dirac::Context::Context </td>
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<td><code> [inline]</code></td>
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Default constructor initialises counts to 1 each of 0 and 1.
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="2e169fe721a59bddbd28a906b9dc17ea"></a><!-- doxytag: member="dirac::Context::GetScaledProb0" ref="2e169fe721a59bddbd28a906b9dc17ea" args="() const " -->
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<td class="memname">unsigned int dirac::Context::GetScaledProb0 </td>
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<td> const<code> [inline]</code></td>
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<p>References <a class="el" href="a00161_source.html#l00089">m_prob0</a>.</p>
<p>Referenced by <a class="el" href="a00161_source.html#l00202">dirac::ArithCodecBase::DecodeSymbol()</a>, and <a class="el" href="a00161_source.html#l00280">dirac::ArithCodecBase::EncodeSymbol()</a>.</p>
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<a class="anchor" name="4c7c472be34ced9c8fe69655c634bf0e"></a><!-- doxytag: member="dirac::Context::Update" ref="4c7c472be34ced9c8fe69655c634bf0e" args="(bool symbol)" -->
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<td class="memname">void dirac::Context::Update </td>
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<td><code> [inline]</code></td>
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<p>References <a class="el" href="a00161_source.html#l00090">lut</a>, and <a class="el" href="a00161_source.html#l00089">m_prob0</a>.</p>
<p>Referenced by <a class="el" href="a00161_source.html#l00202">dirac::ArithCodecBase::DecodeSymbol()</a>, and <a class="el" href="a00161_source.html#l00280">dirac::ArithCodecBase::EncodeSymbol()</a>.</p>
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<hr><h2>Member Data Documentation</h2>
<a class="anchor" name="890205dc2ebcec3471edfd3d946e49b2"></a><!-- doxytag: member="dirac::Context::lut" ref="890205dc2ebcec3471edfd3d946e49b2" args="[256]" -->
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<td class="memname">const unsigned int <a class="el" href="a00026.html#890205dc2ebcec3471edfd3d946e49b2">dirac::Context::lut</a>[256]<code> [static, private]</code> </td>
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<p>Referenced by <a class="el" href="a00161_source.html#l00082">Update()</a>.</p>
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<a class="anchor" name="811817929c5649f4122217e7a439224e"></a><!-- doxytag: member="dirac::Context::m_prob0" ref="811817929c5649f4122217e7a439224e" args="" -->
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<td class="memname">int <a class="el" href="a00026.html#811817929c5649f4122217e7a439224e">dirac::Context::m_prob0</a><code> [private]</code> </td>
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<p>Referenced by <a class="el" href="a00161_source.html#l00079">GetScaledProb0()</a>, and <a class="el" href="a00161_source.html#l00082">Update()</a>.</p>
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="a00161_source.html">arith_codec.h</a></ul>
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© 2004 British Broadcasting Corporation.
Dirac code licensed under the <a href="http://www.mozilla.org/MPL/">Mozilla Public License (MPL) Version 1.1</a>.<br>
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