gvsig-raster / org.gvsig.raster.cache / trunk / org.gvsig.raster.cache / org.gvsig.raster.cache.lib.api / src / main / java / org / gvsig / raster / cache / buffer / BufferCacheManager.java @ 995
History | View | Annotate | Download (5.97 KB)
1 |
/* gvSIG. Geographic Information System of the Valencian Government
|
---|---|
2 |
*
|
3 |
* Copyright (C) 2007-2008 Infrastructures and Transports Department
|
4 |
* of the Valencian Government (CIT)
|
5 |
*
|
6 |
* This program is free software; you can redistribute it and/or
|
7 |
* modify it under the terms of the GNU General Public License
|
8 |
* as published by the Free Software Foundation; either version 2
|
9 |
* of the License, or (at your option) any later version.
|
10 |
*
|
11 |
* This program is distributed in the hope that it will be useful,
|
12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
14 |
* GNU General Public License for more details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU General Public License
|
17 |
* along with this program; if not, write to the Free Software
|
18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
19 |
* MA 02110-1301, USA.
|
20 |
*
|
21 |
*/
|
22 |
package org.gvsig.raster.cache.buffer; |
23 |
|
24 |
import org.gvsig.raster.cache.buffer.histogram.BufferHistogram; |
25 |
|
26 |
|
27 |
|
28 |
|
29 |
|
30 |
/**
|
31 |
* This class is responsible of the management of the library's business logic.
|
32 |
* It is the library's main entry point, and provides all the services to manage
|
33 |
* {@link BufferCacheService}s.
|
34 |
*
|
35 |
* @author Nacho Brodin (nachobrodin@gmail.com)
|
36 |
* @version $Id$
|
37 |
*/
|
38 |
public interface BufferCacheManager { |
39 |
public static int DONT_FORCE = 0; |
40 |
public static int MEMORY_BUFFER = 1; |
41 |
public static int BAND_CACHE = 2; |
42 |
public static int BAND_VERT_CACHE = 3; |
43 |
public static int READ_ONLY_CACHE = 4; |
44 |
|
45 |
/**
|
46 |
* Valor noData por defecto para la librer?a. En caso de no tener un valor asociado
|
47 |
* al raster se usar? este.
|
48 |
*/
|
49 |
public static double defaultNoDataValue = -99999; |
50 |
public static boolean noDataValueEnable = false; |
51 |
|
52 |
/**
|
53 |
* Genera instancias del buffer de datos adecuado al tama?o del raster. Si no hay muchos datos
|
54 |
* (menos de cacheMemorySize) crear? un buffer en memoria. Si hay m?s de esta cantidad
|
55 |
* entonces crearemos un buffer cacheado (RasterCache). A partir de la cantidad se?alada
|
56 |
* por multicacheMemorySize haremos un buffer cacheado donde cada p?gina no ocupa todo
|
57 |
* el ancho del raster ya que este ser? muy grande. La gesti?n de una cache donde cada
|
58 |
* pagina ha de partir una l?nea lleva una complejidad a?adida.
|
59 |
*
|
60 |
* @param params Par?metros de la carga
|
61 |
* @return Objeto RasterBuffer
|
62 |
*/
|
63 |
public Buffer createBuffer(BufferParam params); |
64 |
|
65 |
/**
|
66 |
* Genera una instancia del buffer de solo lectura. Este buffer consta de una cache y unos apuntadores
|
67 |
* a las p?ginas en disco. Cuando se accede a los datos se carga en memoria la p?gina pedida.
|
68 |
*
|
69 |
* @param file
|
70 |
* File to read data
|
71 |
*/
|
72 |
public Buffer createReadOnlyBuffer(String file); |
73 |
|
74 |
/**
|
75 |
* Genera una instancia del buffer de solo lectura. Este buffer consta de una cache y unos apuntadores
|
76 |
* a las p?ginas en disco. Cuando se accede a los datos se carga en memoria la p?gina pedida.
|
77 |
*
|
78 |
* @param dataType Tipo de dato
|
79 |
* @param width Ancho
|
80 |
* @param height Alto
|
81 |
* @param bandNr Banda
|
82 |
* @param flag En caso de buffers de memoria este flag a true significa que se reserva la memoria
|
83 |
* para el buffer de forma normal y si est? a false no se reserva por lo que la reserva deber? ser
|
84 |
* posterior.
|
85 |
*/
|
86 |
public Buffer createMemoryBuffer(int dataType, int width, int height, int bandNr, boolean malloc); |
87 |
|
88 |
/**
|
89 |
* Creates a new instance of an interpolation object.
|
90 |
* @param buf IRasterBuffer
|
91 |
* @return IBufferInterpolation
|
92 |
*/
|
93 |
public BufferInterpolation createInterpolation(Buffer buf); |
94 |
|
95 |
/**
|
96 |
* Builds a new parameter object
|
97 |
* @param x
|
98 |
* Upper left X position
|
99 |
* @param y
|
100 |
* Upper left X position
|
101 |
* @param w
|
102 |
* Width
|
103 |
* @param h
|
104 |
* Height
|
105 |
*/
|
106 |
public BufferParam createBufferParams(int w, int h); |
107 |
|
108 |
/**
|
109 |
* Creates a parameter object for building a buffer. The buffer type is read-write.
|
110 |
* This type could be changed after the creation of a {@link BufferParam} object.
|
111 |
* @param w
|
112 |
* Width
|
113 |
* @param h
|
114 |
* Height
|
115 |
* @param bandCount
|
116 |
* Number of bands
|
117 |
* @param dataType
|
118 |
* Type of data
|
119 |
*/
|
120 |
public BufferParam createBufferParams(int w, int h, int bandCount, int dataType); |
121 |
|
122 |
/**
|
123 |
* Builds a new NoData object
|
124 |
* @param noData
|
125 |
* value to assign to all bands
|
126 |
* @param nativeNoData
|
127 |
* The native is the original value
|
128 |
* saved in the head of the file or its metadata.
|
129 |
* @param fileName
|
130 |
* Name of file owner of this nodata value. This string is useful to
|
131 |
* save the rmf file
|
132 |
* @param bandCount
|
133 |
* Number of bands of the file
|
134 |
* @return NoData
|
135 |
*/
|
136 |
public BufferNoData createNoData(Number noData, Number nativeNoData, String fileName, int bandCount); |
137 |
|
138 |
/**
|
139 |
* Builds a new NoData for DEMs
|
140 |
* @param noData
|
141 |
* value to assign to all bands
|
142 |
* @param nativeNoData
|
143 |
* The native is the original value
|
144 |
* saved in the head of the file or its metadata.
|
145 |
* @param fileName
|
146 |
* Name of file owner of this nodata value. This string is useful to
|
147 |
* save the rmf file
|
148 |
* @return NoData
|
149 |
*/
|
150 |
public BufferNoData createNoData(Number noData, Number nativeNoData, String fileName); |
151 |
|
152 |
/**
|
153 |
* Builds a new NoData for DEMs
|
154 |
* @param dataType
|
155 |
* dataType of this NoData
|
156 |
* @param bandCount
|
157 |
* Number of bands
|
158 |
* @return NoData
|
159 |
*/
|
160 |
public BufferNoData createDefaultNoData(int bandCount, int dataType); |
161 |
|
162 |
/**
|
163 |
* Creates a empty histogram
|
164 |
* @param nBands
|
165 |
* @param min
|
166 |
* @param max
|
167 |
* @param dataType
|
168 |
* @param numberOfClasses
|
169 |
* @return
|
170 |
*/
|
171 |
public BufferHistogram createHistogram(int nBands, double[] min, double[] max, int dataType, int numberOfClasses); |
172 |
|
173 |
/**
|
174 |
* Creates a empty histogram
|
175 |
* @param nBands
|
176 |
* @param min
|
177 |
* @param max
|
178 |
* @param dataType
|
179 |
* @param numberOfClasses
|
180 |
* @return
|
181 |
*/
|
182 |
public BufferHistogram createHistogram(int nBands, int nClasses, double[] min, double[] max); |
183 |
} |