# Dirac - A Video Codec

Created by the British Broadcasting Corporation.

downconvert.h
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1 /* ***** BEGIN LICENSE BLOCK *****
2 *
3 * $Id: downconvert.h,v 1.11 2007/03/19 16:19:00 asuraparaju Exp $ $Name: Dirac_1_0_2 $
4 *
5 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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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
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16 * The Original Code is BBC Research and Development code.
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18 * The Initial Developer of the Original Code is the British Broadcasting
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20 * Portions created by the Initial Developer are Copyright (C) 2004.
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23 * Contributor(s): Richard Felton (Original Author),
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38
39 #ifndef _DOWNCONVERT_H_
40 #define _DOWNCONVERT_H_
41
42 #include <libdirac_common/common.h>
43 namespace dirac
44 {
45
47
53 class DownConverter{
54
55 public:
56
58 DownConverter();
60 ~DownConverter(){};
61
63
68 void DoDownConvert(const PicArray& old_data, PicArray& new_data);
69
70 private:
71 //Copy constructor
72 DownConverter(const DownConverter& cpy);//private, body-less: class should not be copied
73 //Assignment=
74 DownConverter& operator=(const DownConverter& rhs);//private, body-less: class should not be assigned
75
76 //Applies the filter to a single column
77 void RowLoop(const int colpos , PicArray& new_data );
78
79 ValueType* m_row_buffer;
80
81 //Define filter parameters
82 static const int Stage_I_Size = 6;
83 static const int StageI_I = 86;
84 static const int StageI_II = 46;
85 static const int StageI_III = 4;
86 static const int StageI_IV = -8;
87 static const int StageI_V = -4;
88 static const int StageI_VI = 4;
89 static const int StageI_Shift = 8;
90 };
91
92 } // namespace dirac
93
94 #endif
dirac::DownConverter::StageI_IV
static const int StageI_IV
Definition: downconvert.h:86
dirac::DownConverter::DoDownConvert
void DoDownConvert(const PicArray &old_data, PicArray &new_data)
A function to do the actual down-conversion.
dirac::DownConverter::operator=
DownConverter & operator=(const DownConverter &rhs)
dirac::DownConverter::StageI_VI
static const int StageI_VI
Definition: downconvert.h:88
dirac::DownConverter::StageI_V
static const int StageI_V
Definition: downconvert.h:87
common.h
dirac::PicArray
A class for picture component data.
Definition: common.h:718
dirac::DownConverter::StageI_I
static const int StageI_I
Definition: downconvert.h:83
dirac::DownConverter::~DownConverter
~DownConverter()
Destructor.
Definition: downconvert.h:60
dirac::DownConverter::StageI_Shift
static const int StageI_Shift
Definition: downconvert.h:89
dirac::DownConverter::Stage_I_Size
static const int Stage_I_Size
Definition: downconvert.h:82
dirac::ValueType
short ValueType
Type of picture data (including motion compensated residuals)
Definition: common.h:70
dirac::DownConverter::m_row_buffer
ValueType * m_row_buffer
Definition: downconvert.h:79
dirac::DownConverter::StageI_II
static const int StageI_II
Definition: downconvert.h:84
dirac
Definition of class SequenceHeaderByteIO.
Definition: accessunit_byteio.h:51
dirac::DownConverter::RowLoop
void RowLoop(const int colpos, PicArray &new_data)
dirac::DownConverter
A class for fast downconversion of picture data.
Definition: downconvert.h:53
dirac::DownConverter::DownConverter
DownConverter()
Constructor.
dirac::DownConverter::StageI_III
static const int StageI_III
Definition: downconvert.h:85

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