libpgf 6.14.12
PGF - Progressive Graphics File
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
45public:
48 CSubband();
49
52 ~CSubband();
53
57 bool AllocMemory();
58
61 void FreeMemory();
62
71 void ExtractTile(CEncoder& encoder, bool tile = false, UINT32 tileX = 0, UINT32 tileY = 0) THROW_;
72
81 void PlaceTile(CDecoder& decoder, int quantParam, bool tile = false, UINT32 tileX = 0, UINT32 tileY = 0) THROW_;
82
88 void Quantize(int quantParam);
89
95 void Dequantize(int quantParam);
96
101 void SetData(UINT32 pos, DataT v) { ASSERT(pos < m_size); m_data[pos] = v; }
102
106 DataT* GetBuffer() { return m_data; }
107
112 DataT GetData(UINT32 pos) const { ASSERT(pos < m_size); return m_data[pos]; }
113
117 int GetLevel() const { return m_level; }
118
122 int GetHeight() const { return m_height; }
123
127 int GetWidth() const { return m_width; }
128
135
136#ifdef __PGFROISUPPORT__
140 void IncBuffRow(UINT32 pos) { m_dataPos = pos + BufferWidth(); }
141
142#endif
143
144private:
145 void Initialize(UINT32 width, UINT32 height, int level, Orientation orient);
146 void WriteBuffer(DataT val) { ASSERT(m_dataPos < m_size); m_data[m_dataPos++] = val; }
147 void SetBuffer(DataT* b) { ASSERT(b); m_data = b; }
148 DataT ReadBuffer() { ASSERT(m_dataPos < m_size); return m_data[m_dataPos++]; }
149
150 UINT32 GetBuffPos() const { return m_dataPos; }
151
152#ifdef __PGFROISUPPORT__
153 UINT32 BufferWidth() const { return m_ROI.Width(); }
154 void TilePosition(UINT32 tileX, UINT32 tileY, UINT32& left, UINT32& top, UINT32& w, UINT32& h) const;
155 const PGFRect& GetROI() const { return m_ROI; }
156 void SetNTiles(UINT32 nTiles) { m_nTiles = nTiles; }
157 void SetROI(const PGFRect& roi) { ASSERT(roi.right <= m_width); ASSERT(roi.bottom <= m_height); m_ROI = roi; }
158 void InitBuffPos(UINT32 left = 0, UINT32 top = 0) { m_dataPos = top*BufferWidth() + left; ASSERT(m_dataPos < m_size); }
159#else
160 void InitBuffPos() { m_dataPos = 0; }
161#endif
162
163private:
164 UINT32 m_width;
165 UINT32 m_height;
166 UINT32 m_size;
169 UINT32 m_dataPos;
171
172#ifdef __PGFROISUPPORT__
173 PGFRect m_ROI;
174 UINT32 m_nTiles;
175#endif
176};
177
178#endif //PGF_SUBBAND_H
PGF definitions.
Orientation
Definition: PGFtypes.h:92
INT32 DataT
Definition: PGFtypes.h:219
PGF decoder.
Definition: Decoder.h:46
PGF encoder.
Definition: Encoder.h:46
Wavelet channel class.
Definition: Subband.h:42
void InitBuffPos()
Definition: Subband.h:160
UINT32 m_size
size of data buffer m_data
Definition: Subband.h:166
void SetData(UINT32 pos, DataT v)
Definition: Subband.h:101
DataT * GetBuffer()
Definition: Subband.h:106
UINT32 m_dataPos
current position in m_data
Definition: Subband.h:169
bool AllocMemory()
Definition: Subband.cpp:77
void SetBuffer(DataT *b)
Definition: Subband.h:147
void WriteBuffer(DataT val)
Definition: Subband.h:146
int GetWidth() const
Definition: Subband.h:127
int GetLevel() const
Definition: Subband.h:117
void Dequantize(int quantParam)
Definition: Subband.cpp:154
Orientation GetOrientation() const
Definition: Subband.h:134
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:150
UINT32 m_height
height in pixels
Definition: Subband.h:165
Orientation m_orientation
0=LL, 1=HL, 2=LH, 3=HH L=lowpass filtered, H=highpass filterd
Definition: Subband.h:168
DataT * m_data
buffer
Definition: Subband.h:170
int m_level
recursion level
Definition: Subband.h:167
void PlaceTile(CDecoder &decoder, int quantParam, bool tile=false, UINT32 tileX=0, UINT32 tileY=0) THROW_
Definition: Subband.cpp:202
int GetHeight() const
Definition: Subband.h:122
DataT ReadBuffer()
Definition: Subband.h:148
void ExtractTile(CEncoder &encoder, bool tile=false, UINT32 tileX=0, UINT32 tileY=0) THROW_
Definition: Subband.cpp:177
~CSubband()
Destructor.
Definition: Subband.cpp:51
DataT GetData(UINT32 pos) const
Definition: Subband.h:112
UINT32 m_width
width in pixels
Definition: Subband.h:164
CSubband()
Standard constructor.
Definition: Subband.cpp:35
PGF wavelet transform.
Rectangle.
Definition: PGFtypes.h:194
UINT32 bottom
Definition: PGFtypes.h:215
UINT32 right
Definition: PGFtypes.h:215