# Dirac - A Video Codec

Created by the British Broadcasting Corporation.

upconvert.h
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1 /* ***** BEGIN LICENSE BLOCK *****
2 *
3 * $Id: upconvert.h,v 1.13 2007/11/22 15:19:28 tjdwave Exp $ $Name: Dirac_1_0_2 $
4 *
5 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
6 *
7 * The contents of this file are subject to the Mozilla Public License
8 * Version 1.1 (the "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 * http://www.mozilla.org/MPL/
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12 * Software distributed under the License is distributed on an "AS IS" basis,
13 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
14 * the specific language governing rights and limitations under the License.
15 *
16 * The Original Code is BBC Research and Development code.
17 *
18 * The Initial Developer of the Original Code is the British Broadcasting
19 * Corporation.
20 * Portions created by the Initial Developer are Copyright (C) 2004.
21 * All Rights Reserved.
22 *
23 * Contributor(s): Richard Felton (Original Author), Thomas Davies
24 *
25 * Alternatively, the contents of this file may be used under the terms of
26 * the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser
27 * Public License Version 2.1 (the "LGPL"), in which case the provisions of
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37
38 #ifndef _UPCONVERT_H_
39 #define _UPCONVERT_H_
40
41 #include <libdirac_common/common.h>
42
43 namespace dirac
44 {
45 //Optimised upconversion class - no array resizes.
46 //Uses integer math - no floats!
47 //
48
50
53 class UpConverter
54 {
55
56 public:
57
59 UpConverter(int min_val, int max_val, int orig_xlen, int orig_ylen);
60
62 ~UpConverter() {};
63
65
70 void DoUpConverter(const PicArray& pic_data, PicArray& up_data);
71
72 private:
74 UpConverter(const UpConverter& cpy);
75
77 UpConverter& operator=(const UpConverter& rhs);
78
80 void RowLoop(PicArray& up_data, const int row_num,
81 const int filter_size, const int filter_shift, const short taps[4] );
82
83 private:
84 //Variable to keep the loops in check
85 int m_width_old, m_height_old;
86 int m_width_new, m_height_new;
87
88
89 const int m_min_val;
90 const int m_max_val;
91
92 const int m_orig_xl;
93 const int m_orig_yl;
94 };
95
96 } // namespace dirac
97
98 #endif

© 2004 British Broadcasting Corporation. Dirac code licensed under the Mozilla Public License (MPL) Version 1.1.
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