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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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<h1>downconvert.h</h1><a href="a00188.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ***** BEGIN LICENSE BLOCK *****</span>
<a name="l00002"></a>00002 <span class="comment">*</span>
<a name="l00003"></a>00003 <span class="comment">* $Id: downconvert.h,v 1.11 2007/03/19 16:19:00 asuraparaju Exp $ $Name: Dirac_1_0_2 $</span>
<a name="l00004"></a>00004 <span class="comment">*</span>
<a name="l00005"></a>00005 <span class="comment">* Version: MPL 1.1/GPL 2.0/LGPL 2.1</span>
<a name="l00006"></a>00006 <span class="comment">*</span>
<a name="l00007"></a>00007 <span class="comment">* The contents of this file are subject to the Mozilla Public License</span>
<a name="l00008"></a>00008 <span class="comment">* Version 1.1 (the "License"); you may not use this file except in compliance</span>
<a name="l00009"></a>00009 <span class="comment">* with the License. You may obtain a copy of the License at</span>
<a name="l00010"></a>00010 <span class="comment">* http://www.mozilla.org/MPL/</span>
<a name="l00011"></a>00011 <span class="comment">*</span>
<a name="l00012"></a>00012 <span class="comment">* Software distributed under the License is distributed on an "AS IS" basis,</span>
<a name="l00013"></a>00013 <span class="comment">* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for</span>
<a name="l00014"></a>00014 <span class="comment">* the specific language governing rights and limitations under the License.</span>
<a name="l00015"></a>00015 <span class="comment">*</span>
<a name="l00016"></a>00016 <span class="comment">* The Original Code is BBC Research and Development code.</span>
<a name="l00017"></a>00017 <span class="comment">*</span>
<a name="l00018"></a>00018 <span class="comment">* The Initial Developer of the Original Code is the British Broadcasting</span>
<a name="l00019"></a>00019 <span class="comment">* Corporation.</span>
<a name="l00020"></a>00020 <span class="comment">* Portions created by the Initial Developer are Copyright (C) 2004.</span>
<a name="l00021"></a>00021 <span class="comment">* All Rights Reserved.</span>
<a name="l00022"></a>00022 <span class="comment">*</span>
<a name="l00023"></a>00023 <span class="comment">* Contributor(s): Richard Felton (Original Author),</span>
<a name="l00024"></a>00024 <span class="comment">* Thomas Davies</span>
<a name="l00025"></a>00025 <span class="comment">*</span>
<a name="l00026"></a>00026 <span class="comment">* Alternatively, the contents of this file may be used under the terms of</span>
<a name="l00027"></a>00027 <span class="comment">* the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser</span>
<a name="l00028"></a>00028 <span class="comment">* Public License Version 2.1 (the "LGPL"), in which case the provisions of</span>
<a name="l00029"></a>00029 <span class="comment">* the GPL or the LGPL are applicable instead of those above. If you wish to</span>
<a name="l00030"></a>00030 <span class="comment">* allow use of your version of this file only under the terms of the either</span>
<a name="l00031"></a>00031 <span class="comment">* the GPL or LGPL and not to allow others to use your version of this file</span>
<a name="l00032"></a>00032 <span class="comment">* under the MPL, indicate your decision by deleting the provisions above</span>
<a name="l00033"></a>00033 <span class="comment">* and replace them with the notice and other provisions required by the GPL</span>
<a name="l00034"></a>00034 <span class="comment">* or LGPL. If you do not delete the provisions above, a recipient may use</span>
<a name="l00035"></a>00035 <span class="comment">* your version of this file under the terms of any one of the MPL, the GPL</span>
<a name="l00036"></a>00036 <span class="comment">* or the LGPL.</span>
<a name="l00037"></a>00037 <span class="comment">* ***** END LICENSE BLOCK ***** */</span>
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="preprocessor">#ifndef _DOWNCONVERT_H_</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor">#define _DOWNCONVERT_H_</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span>
<a name="l00042"></a>00042 <span class="preprocessor">#include <<a class="code" href="a00171.html">libdirac_common/common.h</a>></span>
<a name="l00043"></a>00043 <span class="keyword">namespace </span>dirac
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045
<a name="l00047"></a>00047
<a name="l00053"></a><a class="code" href="a00053.html">00053</a> <span class="keyword">class </span><a class="code" href="a00053.html" title="A class for fast downconversion of picture data.">DownConverter</a>{
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="keyword">public</span>:
<a name="l00056"></a>00056
<a name="l00058"></a>00058 <a class="code" href="a00053.html#ff6e1ccfb53a4a1b886acca11f290309" title="Constructor.">DownConverter</a>();
<a name="l00060"></a><a class="code" href="a00053.html#e30b5f9b1e1a2c02dede6f1416d9e7c0">00060</a> <a class="code" href="a00053.html#e30b5f9b1e1a2c02dede6f1416d9e7c0" title="Destructor.">~DownConverter</a>(){};
<a name="l00061"></a>00061
<a name="l00063"></a>00063
<a name="l00068"></a>00068 <span class="keywordtype">void</span> <a class="code" href="a00053.html#4f281bc31c0415e40e7178626d0a620f" title="A function to do the actual down-conversion.">DoDownConvert</a>(<span class="keyword">const</span> <a class="code" href="a00107.html" title="A class for picture component data.">PicArray</a>& old_data, <a class="code" href="a00107.html" title="A class for picture component data.">PicArray</a>& new_data);
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keyword">private</span>:
<a name="l00071"></a>00071 <span class="comment">//Copy constructor</span>
<a name="l00072"></a>00072 <a class="code" href="a00053.html#ff6e1ccfb53a4a1b886acca11f290309" title="Constructor.">DownConverter</a>(<span class="keyword">const</span> <a class="code" href="a00053.html" title="A class for fast downconversion of picture data.">DownConverter</a>& cpy);<span class="comment">//private, body-less: class should not be copied</span>
<a name="l00073"></a>00073 <span class="comment">//Assignment=</span>
<a name="l00074"></a>00074 <a class="code" href="a00053.html" title="A class for fast downconversion of picture data.">DownConverter</a>& <a class="code" href="a00053.html#4d1e850cc14fc732a7b064089083f2d6">operator=</a>(<span class="keyword">const</span> <a class="code" href="a00053.html" title="A class for fast downconversion of picture data.">DownConverter</a>& rhs);<span class="comment">//private, body-less: class should not be assigned</span>
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="comment">//Applies the filter to a single column</span>
<a name="l00077"></a>00077 <span class="keywordtype">void</span> <a class="code" href="a00053.html#663b44dca0dd389fb121fb1c4d4bafb9">RowLoop</a>(<span class="keyword">const</span> <span class="keywordtype">int</span> colpos , <a class="code" href="a00107.html" title="A class for picture component data.">PicArray</a>& new_data );
<a name="l00078"></a>00078
<a name="l00079"></a><a class="code" href="a00053.html#fc9ba7b1aa3894027591801eea4b942e">00079</a> <a class="code" href="a00234.html#548820ca76f864dc8630df79b2c5c5b9" title="Type of picture data (including motion compensated residuals).">ValueType</a>* <a class="code" href="a00053.html#fc9ba7b1aa3894027591801eea4b942e">m_row_buffer</a>;
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="comment">//Define filter parameters</span>
<a name="l00082"></a><a class="code" href="a00053.html#7c0739160a627fc9d3fb1869ba7d7b69">00082</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="a00053.html#7c0739160a627fc9d3fb1869ba7d7b69">Stage_I_Size</a> = 6;
<a name="l00083"></a><a class="code" href="a00053.html#7b84ecd1df06f487e754e4ef471d0f7b">00083</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="a00053.html#7b84ecd1df06f487e754e4ef471d0f7b">StageI_I</a> = 86;
<a name="l00084"></a><a class="code" href="a00053.html#57fd59592f69f6f1d115f6330bc8e068">00084</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="a00053.html#57fd59592f69f6f1d115f6330bc8e068">StageI_II</a> = 46;
<a name="l00085"></a><a class="code" href="a00053.html#7ffc58502ffafef81cc3243c8f659b77">00085</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="a00053.html#7ffc58502ffafef81cc3243c8f659b77">StageI_III</a> = 4;
<a name="l00086"></a><a class="code" href="a00053.html#a04070423248ec7891c21078b10ef9d3">00086</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="a00053.html#a04070423248ec7891c21078b10ef9d3">StageI_IV</a> = -8;
<a name="l00087"></a><a class="code" href="a00053.html#1fbff50dda2b11c8c3eba85d011f0465">00087</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="a00053.html#1fbff50dda2b11c8c3eba85d011f0465">StageI_V</a> = -4;
<a name="l00088"></a><a class="code" href="a00053.html#46b0900bddefcc221ad5b1c83a714b6c">00088</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="a00053.html#46b0900bddefcc221ad5b1c83a714b6c">StageI_VI</a> = 4;
<a name="l00089"></a><a class="code" href="a00053.html#f1b8431765a6c3eddbe3a064311c770e">00089</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="a00053.html#f1b8431765a6c3eddbe3a064311c770e">StageI_Shift</a> = 8;
<a name="l00090"></a>00090 };
<a name="l00091"></a>00091
<a name="l00092"></a>00092 } <span class="comment">// namespace dirac</span>
<a name="l00093"></a>00093
<a name="l00094"></a>00094 <span class="preprocessor">#endif</span>
</pre></div></div>
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<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
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