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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>upconvert.h</h1><a href="a00231.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: upconvert.h,v 1.13 2007/11/22 15:19:28 tjdwave 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), Thomas Davies</span>
<a name="l00024"></a>00024 <span class="comment">*</span>
<a name="l00025"></a>00025 <span class="comment">* Alternatively, the contents of this file may be used under the terms of</span>
<a name="l00026"></a>00026 <span class="comment">* the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser</span>
<a name="l00027"></a>00027 <span class="comment">* Public License Version 2.1 (the "LGPL"), in which case the provisions of</span>
<a name="l00028"></a>00028 <span class="comment">* the GPL or the LGPL are applicable instead of those above. If you wish to</span>
<a name="l00029"></a>00029 <span class="comment">* allow use of your version of this file only under the terms of the either</span>
<a name="l00030"></a>00030 <span class="comment">* the GPL or LGPL and not to allow others to use your version of this file</span>
<a name="l00031"></a>00031 <span class="comment">* under the MPL, indicate your decision by deleting the provisions above</span>
<a name="l00032"></a>00032 <span class="comment">* and replace them with the notice and other provisions required by the GPL</span>
<a name="l00033"></a>00033 <span class="comment">* or LGPL. If you do not delete the provisions above, a recipient may use</span>
<a name="l00034"></a>00034 <span class="comment">* your version of this file under the terms of any one of the MPL, the GPL</span>
<a name="l00035"></a>00035 <span class="comment">* or the LGPL.</span>
<a name="l00036"></a>00036 <span class="comment">* ***** END LICENSE BLOCK ***** */</span>
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="preprocessor">#ifndef _UPCONVERT_H_</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span><span class="preprocessor">#define _UPCONVERT_H_</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span>
<a name="l00041"></a>00041 <span class="preprocessor">#include <<a class="code" href="a00171.html">libdirac_common/common.h</a>></span>
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="keyword">namespace </span>dirac
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045 <span class="comment">//Optimised upconversion class - no array resizes.</span>
<a name="l00046"></a>00046 <span class="comment">//Uses integer math - no floats!</span>
<a name="l00047"></a>00047 <span class="comment">//</span>
<a name="l00048"></a>00048
<a name="l00050"></a>00050
<a name="l00053"></a><a class="code" href="a00146.html">00053</a> <span class="keyword">class </span><a class="code" href="a00146.html" title="Upconversion class.">UpConverter</a>
<a name="l00054"></a>00054 {
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="keyword">public</span>:
<a name="l00057"></a>00057
<a name="l00059"></a>00059 <a class="code" href="a00146.html#e0a9f52b5838241b2805536f23bfc5ec" title="Constructor.">UpConverter</a>(<span class="keywordtype">int</span> min_val, <span class="keywordtype">int</span> max_val, <span class="keywordtype">int</span> orig_xlen, <span class="keywordtype">int</span> orig_ylen);
<a name="l00060"></a>00060
<a name="l00062"></a><a class="code" href="a00146.html#6a6eb2daaa9fe145344b54235f6e89be">00062</a> <a class="code" href="a00146.html#6a6eb2daaa9fe145344b54235f6e89be" title="Destructor.">~UpConverter</a>() {};
<a name="l00063"></a>00063
<a name="l00065"></a>00065
<a name="l00070"></a>00070 <span class="keywordtype">void</span> <a class="code" href="a00146.html#842955e63f2db2cd303e985a6457aad3" title="Upconvert the picture data.">DoUpConverter</a>(<span class="keyword">const</span> <a class="code" href="a00107.html" title="A class for picture component data.">PicArray</a>& pic_data, <a class="code" href="a00107.html" title="A class for picture component data.">PicArray</a>& up_data);
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="keyword">private</span>:
<a name="l00074"></a>00074 <a class="code" href="a00146.html#e0a9f52b5838241b2805536f23bfc5ec" title="Constructor.">UpConverter</a>(<span class="keyword">const</span> <a class="code" href="a00146.html" title="Upconversion class.">UpConverter</a>& cpy);
<a name="l00075"></a>00075
<a name="l00077"></a>00077 <a class="code" href="a00146.html" title="Upconversion class.">UpConverter</a>& <a class="code" href="a00146.html#546f7604a994974b675bbd07213407db" title="Private body-less assignment: class should not be assigned.">operator=</a>(<span class="keyword">const</span> <a class="code" href="a00146.html" title="Upconversion class.">UpConverter</a>& rhs);
<a name="l00078"></a>00078
<a name="l00080"></a>00080 <span class="keywordtype">void</span> <a class="code" href="a00146.html#b9cc919711f183459a37f62e10f3c621" title="Applies the filter to a row and its successor.">RowLoop</a>(<a class="code" href="a00107.html" title="A class for picture component data.">PicArray</a>& up_data, <span class="keyword">const</span> <span class="keywordtype">int</span> row_num,
<a name="l00081"></a>00081 <span class="keyword">const</span> <span class="keywordtype">int</span> filter_size, <span class="keyword">const</span> <span class="keywordtype">int</span> filter_shift, <span class="keyword">const</span> <span class="keywordtype">short</span> taps[4] );
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="keyword">private</span>:
<a name="l00084"></a>00084 <span class="comment">//Variable to keep the loops in check</span>
<a name="l00085"></a><a class="code" href="a00146.html#e1f6afaca36e8249d28b290d205c2381">00085</a> <span class="keywordtype">int</span> <a class="code" href="a00146.html#e1f6afaca36e8249d28b290d205c2381">m_width_old</a>, <a class="code" href="a00146.html#ad0cba54033ee8f4900f868123aa5e0d">m_height_old</a>;
<a name="l00086"></a><a class="code" href="a00146.html#827f8201bcb7cde08fc66b11568280e1">00086</a> <span class="keywordtype">int</span> <a class="code" href="a00146.html#827f8201bcb7cde08fc66b11568280e1">m_width_new</a>, <a class="code" href="a00146.html#906033071bc8ec3b7a23c48b9a3048df">m_height_new</a>;
<a name="l00087"></a>00087
<a name="l00088"></a>00088
<a name="l00089"></a><a class="code" href="a00146.html#57d0dc442c57c9da3c058a45f5603fc0">00089</a> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="a00146.html#57d0dc442c57c9da3c058a45f5603fc0">m_min_val</a>;
<a name="l00090"></a><a class="code" href="a00146.html#ea5cc77c47308516297062cfb9224417">00090</a> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="a00146.html#ea5cc77c47308516297062cfb9224417">m_max_val</a>;
<a name="l00091"></a>00091
<a name="l00092"></a><a class="code" href="a00146.html#49432dcaa2d8cfa54809d15bf114717e">00092</a> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="a00146.html#49432dcaa2d8cfa54809d15bf114717e">m_orig_xl</a>;
<a name="l00093"></a><a class="code" href="a00146.html#c6c7d40dc778dcdd392ec52bed8dc031">00093</a> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="a00146.html#c6c7d40dc778dcdd392ec52bed8dc031">m_orig_yl</a>;
<a name="l00094"></a>00094 };
<a name="l00095"></a>00095
<a name="l00096"></a>00096 } <span class="comment">// namespace dirac</span>
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <span class="preprocessor">#endif</span>
</pre></div></div>
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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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