libpgf  7.15.32
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 
34 class CEncoder;
35 class CDecoder;
36 class CRoiIndices;
37 
42 class CSubband {
43  friend class CWaveletTransform;
44  friend class CRoiIndices;
45 
46 public:
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__
138  void IncBuffRow(UINT32 pos) { m_dataPos = pos + BufferWidth(); }
142 
143 #endif
144 
145 private:
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 
165 private:
166  UINT32 m_width;
167  UINT32 m_height;
168  UINT32 m_size;
169  int m_level;
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
DataT * m_data
buffer
Definition: Subband.h:172
void Dequantize(int quantParam)
Definition: Subband.cpp:154
Orientation GetOrientation() const
Definition: Subband.h:135
DataT * GetBuffer()
Definition: Subband.h:107
UINT32 m_width
width in pixels
Definition: Subband.h:166
DataT GetData(UINT32 pos) const
Definition: Subband.h:113
void ExtractTile(CEncoder &encoder, bool tile=false, UINT32 tileX=0, UINT32 tileY=0)
Definition: Subband.cpp:177
INT32 DataT
Definition: PGFtypes.h:262
void SetBuffer(DataT *b)
Definition: Subband.h:148
UINT32 m_height
height in pixels
Definition: Subband.h:167
~CSubband()
Destructor.
Definition: Subband.cpp:51
bool AllocMemory()
Definition: Subband.cpp:77
void Initialize(UINT32 width, UINT32 height, int level, Orientation orient)
Definition: Subband.cpp:57
int GetLevel() const
Definition: Subband.h:118
UINT32 GetBuffPos() const
Definition: Subband.h:151
CSubband()
Standard constructor.
Definition: Subband.cpp:35
Orientation
Definition: PGFtypes.h:99
Wavelet channel class.
Definition: Subband.h:42
PGF wavelet transform.
void InitBuffPos()
Definition: Subband.h:162
int GetHeight() const
Definition: Subband.h:123
DataT ReadBuffer()
Definition: Subband.h:149
void PlaceTile(CDecoder &decoder, int quantParam, bool tile=false, UINT32 tileX=0, UINT32 tileY=0)
Definition: Subband.cpp:203
PGF decoder.
Definition: Decoder.h:46
UINT32 m_size
size of data buffer m_data
Definition: Subband.h:168
void FreeMemory()
Delete the memory buffer of this subband.
Definition: Subband.cpp:101
void Quantize(int quantParam)
Definition: Subband.cpp:112
PGF definitions.
friend class CRoiIndices
Definition: Subband.h:44
void WriteBuffer(DataT val)
Definition: Subband.h:147
int m_level
recursion level
Definition: Subband.h:169
Rectangle.
Definition: PGFtypes.h:222
UINT32 m_dataPos
current position in m_data
Definition: Subband.h:171
int GetWidth() const
Definition: Subband.h:128
void SetData(UINT32 pos, DataT v)
Definition: Subband.h:102
Orientation m_orientation
0=LL, 1=HL, 2=LH, 3=HH L=lowpass filtered, H=highpass filterd
Definition: Subband.h:170
PGF encoder.
Definition: Encoder.h:46