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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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<a class="el" href="a00226.html">dirac</a>::<a class="el" href="a00015.html">BlockDiffQuarterPel</a></div>
<h1>dirac::BlockDiffQuarterPel Class Reference</h1><!-- doxytag: class="dirac::BlockDiffQuarterPel" --><!-- doxytag: inherits="dirac::BlockDiffUp" -->A class for doing differences with quarter-pixel accurate vectors.
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<code>#include <<a class="el" href="a00266.html">me_utils.h</a>></code>
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Inheritance diagram for dirac::BlockDiffQuarterPel:</div>
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<p><center><img src="a00015.png" usemap="#dirac::BlockDiffQuarterPel_map" border="0" alt=""></center>
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<area href="a00011.html" alt="dirac::BlockDiff" shape="rect" coords="0,0,160,24">
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<a href="a00435.html">List of all members.</a><h2>Public Member Functions</h2>
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<li><a class="el" href="a00015.html#acf079bf677b9556edd0c00ea2d1c037">BlockDiffQuarterPel</a> (const <a class="el" href="a00113.html">PicArray</a> &ref, const <a class="el" href="a00113.html">PicArray</a> &pic)
<dl class="el"><dd class="mdescRight">Constructor, initialising the reference and picture data. <a href="#acf079bf677b9556edd0c00ea2d1c037"></a><br></dl><li><a class="el" href="a00015.html#3f4722a6940897eb0f97584786bade5f">~BlockDiffQuarterPel</a> ()
<dl class="el"><dd class="mdescRight">Destructor. <a href="#3f4722a6940897eb0f97584786bade5f"></a><br></dl><li>float <a class="el" href="a00015.html#13abb40783f5c4131cfa40b5002a6c7e">Diff</a> (const <a class="el" href="a00014.html">BlockDiffParams</a> &dparams, const <a class="el" href="a00099.html">MVector</a> &mv)
<dl class="el"><dd class="mdescRight">Do the difference, returning SAD. <a href="#13abb40783f5c4131cfa40b5002a6c7e"></a><br></dl><li>void <a class="el" href="a00015.html#f89563a8bddd0da80cbcdddd238dd01a">Diff</a> (const <a class="el" href="a00014.html">BlockDiffParams</a> &dparams, const <a class="el" href="a00099.html">MVector</a> &mv, const float mvcost, const float lambda, <a class="el" href="a00100.html">MvCostData</a> &best_costs, <a class="el" href="a00099.html">MVector</a> &best_mv)
<dl class="el"><dd class="mdescRight">Do the actual difference, overwriting the best MV so far if appropriate. <a href="#f89563a8bddd0da80cbcdddd238dd01a"></a><br></dl></ul>
<h2>Private Member Functions</h2>
<ul>
<li><a class="el" href="a00015.html#f947e7c92afc3aab6e4b7e40e5366271">BlockDiffQuarterPel</a> (const <a class="el" href="a00015.html">BlockDiffQuarterPel</a> &cpy)
<dl class="el"><dd class="mdescRight">Private, bodyless copy-constructor: class should not be copied. <a href="#f947e7c92afc3aab6e4b7e40e5366271"></a><br></dl><li><a class="el" href="a00015.html">BlockDiffQuarterPel</a> & <a class="el" href="a00015.html#797e8e11a696617944466e5471e4a3c2">operator=</a> (const <a class="el" href="a00015.html">BlockDiffQuarterPel</a> &rhs)
<dl class="el"><dd class="mdescRight">Private, bodyless assignment=: class should not be assigned. <a href="#797e8e11a696617944466e5471e4a3c2"></a><br></dl></ul>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="acf079bf677b9556edd0c00ea2d1c037"></a><!-- doxytag: member="dirac::BlockDiffQuarterPel::BlockDiffQuarterPel" ref="acf079bf677b9556edd0c00ea2d1c037" args="(const PicArray &ref, const PicArray &pic)" -->
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<td class="memname">dirac::BlockDiffQuarterPel::BlockDiffQuarterPel </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="a00113.html">PicArray</a> & </td>
<td class="paramname"> <em>ref</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const <a class="el" href="a00113.html">PicArray</a> & </td>
<td class="paramname"> <em>pic</em></td><td> </td>
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<td>)</td>
<td></td><td></td><td width="100%"></td>
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<a class="anchor" name="3f4722a6940897eb0f97584786bade5f"></a><!-- doxytag: member="dirac::BlockDiffQuarterPel::~BlockDiffQuarterPel" ref="3f4722a6940897eb0f97584786bade5f" args="()" -->
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<td class="memname">dirac::BlockDiffQuarterPel::~BlockDiffQuarterPel </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"><code> [inline]</code></td>
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<a class="anchor" name="f947e7c92afc3aab6e4b7e40e5366271"></a><!-- doxytag: member="dirac::BlockDiffQuarterPel::BlockDiffQuarterPel" ref="f947e7c92afc3aab6e4b7e40e5366271" args="(const BlockDiffQuarterPel &cpy)" -->
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<td class="memname">dirac::BlockDiffQuarterPel::BlockDiffQuarterPel </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="a00015.html">BlockDiffQuarterPel</a> & </td>
<td class="paramname"> <em>cpy</em> </td>
<td> ) </td>
<td width="100%"><code> [private]</code></td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="13abb40783f5c4131cfa40b5002a6c7e"></a><!-- doxytag: member="dirac::BlockDiffQuarterPel::Diff" ref="13abb40783f5c4131cfa40b5002a6c7e" args="(const BlockDiffParams &dparams, const MVector &mv)" -->
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<td class="memname">float dirac::BlockDiffQuarterPel::Diff </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="a00014.html">BlockDiffParams</a> & </td>
<td class="paramname"> <em>dparams</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="a00099.html">MVector</a> & </td>
<td class="paramname"> <em>mv</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td width="100%"><code> [virtual]</code></td>
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Do the difference, returning SAD <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>dparams</em> </td><td>block parameters </td></tr>
<tr><td valign="top"></td><td valign="top"><em>mv</em> </td><td>the motion vector being used </td></tr>
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<p>Implements <a class="el" href="a00016.html#c37ea269dc71e0bd0802a4ead1b11f48">dirac::BlockDiffUp</a>.</p>
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<a class="anchor" name="f89563a8bddd0da80cbcdddd238dd01a"></a><!-- doxytag: member="dirac::BlockDiffQuarterPel::Diff" ref="f89563a8bddd0da80cbcdddd238dd01a" args="(const BlockDiffParams &dparams, const MVector &mv, const float mvcost, const float lambda, MvCostData &best_costs, MVector &best_mv)" -->
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<td class="memname">void dirac::BlockDiffQuarterPel::Diff </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="a00014.html">BlockDiffParams</a> & </td>
<td class="paramname"> <em>dparams</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="a00099.html">MVector</a> & </td>
<td class="paramname"> <em>mv</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const float </td>
<td class="paramname"> <em>mvcost</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const float </td>
<td class="paramname"> <em>lambda</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype"><a class="el" href="a00100.html">MvCostData</a> & </td>
<td class="paramname"> <em>best_costs</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype"><a class="el" href="a00099.html">MVector</a> & </td>
<td class="paramname"> <em>best_mv</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td width="100%"><code> [virtual]</code></td>
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Do the actual difference, overwriting the best MV so far if appropriate, and bailing out if we do worse <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>dparams</em> </td><td>block parameters </td></tr>
<tr><td valign="top"></td><td valign="top"><em>mv</em> </td><td>the motion vector being used </td></tr>
<tr><td valign="top"></td><td valign="top"><em>mvcost</em> </td><td>the (prediction) cost of the motion vector mv </td></tr>
<tr><td valign="top"></td><td valign="top"><em>lambda</em> </td><td>the weighting to be given to mvcost </td></tr>
<tr><td valign="top"></td><td valign="top"><em>best_costs</em> </td><td>the best Lagrangian costs obtained yet </td></tr>
<tr><td valign="top"></td><td valign="top"><em>best_mv</em> </td><td>the MV giving the best Lagrangian costs so far </td></tr>
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<p>Implements <a class="el" href="a00016.html#9f39290b437ec2ee1ccc7cc5c2a7a384">dirac::BlockDiffUp</a>.</p>
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<a class="anchor" name="797e8e11a696617944466e5471e4a3c2"></a><!-- doxytag: member="dirac::BlockDiffQuarterPel::operator=" ref="797e8e11a696617944466e5471e4a3c2" args="(const BlockDiffQuarterPel &rhs)" -->
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<td class="memname"><a class="el" href="a00015.html">BlockDiffQuarterPel</a>& dirac::BlockDiffQuarterPel::operator= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="a00015.html">BlockDiffQuarterPel</a> & </td>
<td class="paramname"> <em>rhs</em> </td>
<td> ) </td>
<td width="100%"><code> [private]</code></td>
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="a00266.html">me_utils.h</a></ul>
<hr>
<p align="center"><small>
© 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>
HTML documentation generated by Dimitri van Heesch's
excellent <a href="http://www.doxygen.org">Doxygen</a> tool.
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