Created by the British Broadcasting Corporation.
00001 /* ***** BEGIN LICENSE BLOCK ***** 00002 * 00003 * $Id: upconvert.h,v 1.13 2007/11/22 15:19:28 tjdwave Exp $ $Name: Dirac_1_0_2 $ 00004 * 00005 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 00006 * 00007 * The contents of this file are subject to the Mozilla Public License 00008 * Version 1.1 (the "License"); you may not use this file except in compliance 00009 * with the License. You may obtain a copy of the License at 00010 * http://www.mozilla.org/MPL/ 00011 * 00012 * Software distributed under the License is distributed on an "AS IS" basis, 00013 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for 00014 * the specific language governing rights and limitations under the License. 00015 * 00016 * The Original Code is BBC Research and Development code. 00017 * 00018 * The Initial Developer of the Original Code is the British Broadcasting 00019 * Corporation. 00020 * Portions created by the Initial Developer are Copyright (C) 2004. 00021 * All Rights Reserved. 00022 * 00023 * Contributor(s): Richard Felton (Original Author), Thomas Davies 00024 * 00025 * Alternatively, the contents of this file may be used under the terms of 00026 * the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser 00027 * Public License Version 2.1 (the "LGPL"), in which case the provisions of 00028 * the GPL or the LGPL are applicable instead of those above. If you wish to 00029 * allow use of your version of this file only under the terms of the either 00030 * the GPL or LGPL and not to allow others to use your version of this file 00031 * under the MPL, indicate your decision by deleting the provisions above 00032 * and replace them with the notice and other provisions required by the GPL 00033 * or LGPL. If you do not delete the provisions above, a recipient may use 00034 * your version of this file under the terms of any one of the MPL, the GPL 00035 * or the LGPL. 00036 * ***** END LICENSE BLOCK ***** */ 00037 00038 #ifndef _UPCONVERT_H_ 00039 #define _UPCONVERT_H_ 00040 00041 #include <libdirac_common/common.h> 00042 00043 namespace dirac 00044 { 00045 //Optimised upconversion class - no array resizes. 00046 //Uses integer math - no floats! 00047 // 00048 00050 00053 class UpConverter 00054 { 00055 00056 public: 00057 00059 UpConverter(int min_val, int max_val, int orig_xlen, int orig_ylen); 00060 00062 ~UpConverter() {}; 00063 00065 00070 void DoUpConverter(const PicArray& pic_data, PicArray& up_data); 00071 00072 private: 00074 UpConverter(const UpConverter& cpy); 00075 00077 UpConverter& operator=(const UpConverter& rhs); 00078 00080 void RowLoop(PicArray& up_data, const int row_num, 00081 const int filter_size, const int filter_shift, const short taps[4] ); 00082 00083 private: 00084 //Variable to keep the loops in check 00085 int m_width_old, m_height_old; 00086 int m_width_new, m_height_new; 00087 00088 00089 const int m_min_val; 00090 const int m_max_val; 00091 00092 const int m_orig_xl; 00093 const int m_orig_yl; 00094 }; 00095 00096 } // namespace dirac 00097 00098 #endif
© 2004 British Broadcasting Corporation.
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