libpgf 7.21.2
PGF - Progressive Graphics File
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Subband.h
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1/*
2 * The Progressive Graphics File; http://www.libpgf.org
3 *
4 * $Date: 2006-06-04 22:05:59 +0200 (So, 04 Jun 2006) $
5 * $Revision: 229 $
6 *
7 * This file Copyright (C) 2006 xeraina GmbH, Switzerland
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU LESSER GENERAL PUBLIC LICENSE
11 * as published by the Free Software Foundation; either version 2.1
12 * of the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 */
23
28
29#ifndef PGF_SUBBAND_H
30#define PGF_SUBBAND_H
31
32#include "PGFtypes.h"
33
34class CEncoder;
35class CDecoder;
36class CRoiIndices;
37
42class CSubband {
43 friend class CWaveletTransform;
44 friend class CRoiIndices;
45
46public:
49 CSubband();
50
53 ~CSubband();
54
58 bool AllocMemory();
59
62 void FreeMemory();
63
72 void ExtractTile(CEncoder& encoder, bool tile = false, UINT32 tileX = 0, UINT32 tileY = 0);
73
82 void PlaceTile(CDecoder& decoder, int quantParam, bool tile = false, UINT32 tileX = 0, UINT32 tileY = 0);
83
89 void Quantize(int quantParam);
90
96 void Dequantize(int quantParam);
97
102 void SetData(UINT32 pos, DataT v) { ASSERT(pos < m_size); m_data[pos] = v; }
103
107 DataT* GetBuffer() { return m_data; }
108
113 DataT GetData(UINT32 pos) const { ASSERT(pos < m_size); return m_data[pos]; }
114
118 int GetLevel() const { return m_level; }
119
123 int GetHeight() const { return m_height; }
124
128 int GetWidth() const { return m_width; }
129
136
137#ifdef __PGFROISUPPORT__
141 void IncBuffRow(UINT32 pos) { m_dataPos = pos + BufferWidth(); }
142
143#endif
144
145private:
146 void Initialize(UINT32 width, UINT32 height, int level, Orientation orient);
147 void WriteBuffer(DataT val) { ASSERT(m_dataPos < m_size); m_data[m_dataPos++] = val; }
148 void SetBuffer(DataT* b) { ASSERT(b); m_data = b; }
149 DataT ReadBuffer() { ASSERT(m_dataPos < m_size); return m_data[m_dataPos++]; }
150
151 UINT32 GetBuffPos() const { return m_dataPos; }
152
153#ifdef __PGFROISUPPORT__
154 UINT32 BufferWidth() const { return m_ROI.Width(); }
155 void TilePosition(UINT32 tileX, UINT32 tileY, UINT32& left, UINT32& top, UINT32& w, UINT32& h) const;
156 void TileIndex(bool topLeft, UINT32 xPos, UINT32 yPos, UINT32& tileX, UINT32& tileY, UINT32& x, UINT32& y) const;
157 const PGFRect& GetAlignedROI() const { return m_ROI; }
158 void SetNTiles(UINT32 nTiles) { m_nTiles = nTiles; }
159 void SetAlignedROI(const PGFRect& roi);
160 void InitBuffPos(UINT32 left = 0, UINT32 top = 0) { m_dataPos = top*BufferWidth() + left; ASSERT(m_dataPos < m_size); }
161#else
162 void InitBuffPos() { m_dataPos = 0; }
163#endif
164
165private:
166 UINT32 m_width;
167 UINT32 m_height;
168 UINT32 m_size;
171 UINT32 m_dataPos;
173
174#ifdef __PGFROISUPPORT__
175 PGFRect m_ROI;
176 UINT32 m_nTiles;
177#endif
178};
179
180#endif //PGF_SUBBAND_H
PGF definitions.
Orientation
Definition PGFtypes.h:99
INT32 DataT
Definition PGFtypes.h:269
PGF decoder.
Definition Decoder.h:46
PGF encoder.
Definition Encoder.h:46
Wavelet channel class.
Definition Subband.h:42
friend class CRoiIndices
Definition Subband.h:44
void InitBuffPos()
Definition Subband.h:162
UINT32 m_size
size of data buffer m_data
Definition Subband.h:168
void SetData(UINT32 pos, DataT v)
Definition Subband.h:102
DataT * GetBuffer()
Definition Subband.h:107
UINT32 m_dataPos
current position in m_data
Definition Subband.h:171
bool AllocMemory()
Definition Subband.cpp:77
void SetBuffer(DataT *b)
Definition Subband.h:148
void WriteBuffer(DataT val)
Definition Subband.h:147
int GetWidth() const
Definition Subband.h:128
int GetLevel() const
Definition Subband.h:118
void Dequantize(int quantParam)
Definition Subband.cpp:154
Orientation GetOrientation() const
Definition Subband.h:135
void Initialize(UINT32 width, UINT32 height, int level, Orientation orient)
Definition Subband.cpp:57
void Quantize(int quantParam)
Definition Subband.cpp:112
void FreeMemory()
Delete the memory buffer of this subband.
Definition Subband.cpp:101
UINT32 GetBuffPos() const
Definition Subband.h:151
UINT32 m_height
height in pixels
Definition Subband.h:167
Orientation m_orientation
0=LL, 1=HL, 2=LH, 3=HH L=lowpass filtered, H=highpass filterd
Definition Subband.h:170
DataT * m_data
buffer
Definition Subband.h:172
void ExtractTile(CEncoder &encoder, bool tile=false, UINT32 tileX=0, UINT32 tileY=0)
Definition Subband.cpp:177
int m_level
recursion level
Definition Subband.h:169
int GetHeight() const
Definition Subband.h:123
DataT ReadBuffer()
Definition Subband.h:149
~CSubband()
Destructor.
Definition Subband.cpp:51
void PlaceTile(CDecoder &decoder, int quantParam, bool tile=false, UINT32 tileX=0, UINT32 tileY=0)
Definition Subband.cpp:203
DataT GetData(UINT32 pos) const
Definition Subband.h:113
UINT32 m_width
width in pixels
Definition Subband.h:166
CSubband()
Standard constructor.
Definition Subband.cpp:35
PGF wavelet transform.
Rectangle.
Definition PGFtypes.h:225