gvsig-raster / org.gvsig.raster.gdal / tags / pre-remove-jgdal / org.gvsig.raster.gdal / org.gvsig.raster.gdal.io / src / main / java / org / gvsig / jgdal / GdalRasterBand.java @ 3497
History | View | Annotate | Download (15.2 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 |
|
23 |
package org.gvsig.jgdal; |
24 |
|
25 |
import java.util.Vector; |
26 |
|
27 |
import org.gdal.gdal.Band; |
28 |
import org.gdal.gdal.ColorTable; |
29 |
|
30 |
/**
|
31 |
* Representa a una banda simple de la im?gen o canal.
|
32 |
*
|
33 |
* @author Nacho Brodin (nachobrodin@gmail.com).<BR> Equipo de desarrollo gvSIG.<BR> http://www.gvsig.gva.es
|
34 |
* @version 0.0
|
35 |
* @link http://www.gvsig.gva.es
|
36 |
*/
|
37 |
|
38 |
public class GdalRasterBand extends Band{ |
39 |
|
40 |
|
41 |
private boolean hasNoDataValue = false; |
42 |
|
43 |
|
44 |
// private native long getOverviewNat(long cPtr,int i);
|
45 |
// private native long getRasterColorTableNat(long cPtr);
|
46 |
// private native GdalBuffer readRasterNat(long cPtr,
|
47 |
// int nXOff, int nYOff, int nXSize, int nYSize,
|
48 |
// int BufXSize, int BufYSize,
|
49 |
// int eBufType);
|
50 |
// private native GdalBuffer readRasterWithPaletteNat(long cPtr,
|
51 |
// int nXOff, int nYOff, int nXSize, int nYSize,
|
52 |
// int BufXSize, int BufYSize,
|
53 |
// int eBufType);
|
54 |
// private native void writeRasterNat( long cPtr,
|
55 |
// int nXOff, int nYOff, int nXSize, int nYSize,
|
56 |
// GdalBuffer buffer,
|
57 |
// int eBufType);
|
58 |
// private native double getRasterNoDataValueNat(long cPtr);
|
59 |
// private native int existsNoDataValueNat(long cPtr);
|
60 |
// private native String[] getMetadataNat(long cPtr,String pszDomain);
|
61 |
// private native int getRasterColorInterpretationNat(long cPtr);
|
62 |
// private native int setRasterColorInterpretationNat(long cPtr, int bandType);
|
63 |
|
64 |
|
65 |
/**
|
66 |
* Asigna el identificador de la banda
|
67 |
*/
|
68 |
|
69 |
public GdalRasterBand(long cPtr) { |
70 |
super(cPtr, true); |
71 |
} |
72 |
|
73 |
|
74 |
/**
|
75 |
* Lee datos de la banda de la imagen
|
76 |
*
|
77 |
* @return Devuelve un vector de bytes con el trozo de raster le?do.
|
78 |
* @param nXOff El desplazamiento del pixel desde la esquina superior derecha
|
79 |
* de la banda accedida.
|
80 |
* @param nYOff El desplazamiento de l?nea desde la esquina superior derecha
|
81 |
* de la banda accedida.
|
82 |
* @param nXSize Ancho de la regi?n en pixels de la banda que ser? accedida
|
83 |
* @param nYSize Altura de la regi?n en l?neas de la banda que ser? accedida
|
84 |
* @param bufXSize Ancho del buffer donde la regi?n de la im?gen ser? guardada
|
85 |
* @param bufYSize Altura del buffer donde la regi?n de la im?gen ser? guardada
|
86 |
* En caso de que bufXSize o bufYSize sean menores que 1, pasan a tener el mismo valor que
|
87 |
* nXSize y nYSize respectivamente para evitar buffers con tama?o 0.
|
88 |
* @param eBufType
|
89 |
*/
|
90 |
|
91 |
public GdalBuffer readRaster(int nXOff, int nYOff, int nXSize, int nYSize, |
92 |
int bufXSize, int bufYSize, |
93 |
int eBufType)throws GdalException { |
94 |
//
|
95 |
// if (cPtr == 0)
|
96 |
// throw new GdalException("No se ha podido acceder al archivo.");
|
97 |
|
98 |
if ((nXOff<0) || (nXOff > getRasterBandXSize()) || (nYOff < 0) || (nYOff > getRasterBandYSize())) |
99 |
throw new GdalException("Desplazamiento de la ventana fuera de rango."); |
100 |
|
101 |
if ((nXSize < 1) || (nXSize > getRasterBandXSize()) || (nYSize<1) || (nYSize > getRasterBandYSize())) |
102 |
throw new GdalException("Tama?o de ventana incorrecto."); |
103 |
|
104 |
if (((nXSize + nXOff) > (getRasterBandXSize())) || ((nYSize + nYOff) > (getRasterBandYSize())))
|
105 |
throw new GdalException("Posicion de la ventana incorrecta."); |
106 |
|
107 |
if ((eBufType < 1) || (eBufType > 11)) |
108 |
throw new GdalException("Tipo de datos incorrecto."); |
109 |
|
110 |
if (bufXSize < 1) |
111 |
bufXSize = nXSize; |
112 |
|
113 |
if (bufYSize < 1) |
114 |
bufYSize = nYSize; |
115 |
|
116 |
GdalBuffer buf = new GdalBuffer();
|
117 |
int i = 0; |
118 |
|
119 |
switch(eBufType) {
|
120 |
case 0: |
121 |
i = 0;
|
122 |
break;
|
123 |
case 1: |
124 |
i = this.ReadRaster(nXOff, nYOff, nXSize, nYSize, bufXSize, bufYSize, eBufType, buf.buffByte);
|
125 |
break;
|
126 |
case 2: |
127 |
case 3: |
128 |
case 8: |
129 |
i = this.ReadRaster(nXOff, nYOff, nXSize, nYSize, bufXSize, bufYSize, eBufType, buf.buffShort);
|
130 |
break;
|
131 |
case 4: |
132 |
case 5: |
133 |
case 9: |
134 |
i = this.ReadRaster(nXOff, nYOff, nXSize, nYSize, bufXSize, bufYSize, eBufType, buf.buffInt);
|
135 |
break;
|
136 |
case 6: |
137 |
case 10: |
138 |
i = this.ReadRaster(nXOff, nYOff, nXSize, nYSize, bufXSize, bufYSize, eBufType, buf.buffFloat);
|
139 |
break;
|
140 |
case 7: |
141 |
case 11: |
142 |
i = this.ReadRaster(nXOff, nYOff, nXSize, nYSize, bufXSize, bufYSize, eBufType, buf.buffDouble);
|
143 |
break;
|
144 |
case 12: |
145 |
i = 0;
|
146 |
break;
|
147 |
} |
148 |
|
149 |
|
150 |
if(i>0) |
151 |
return buf;
|
152 |
else
|
153 |
return null; |
154 |
} |
155 |
|
156 |
/**
|
157 |
* Escribe datos en la banda de la imagen
|
158 |
*
|
159 |
* @param nXOff El desplazamiento del pixel desde la esquina superior derecha
|
160 |
* de la banda accedida.
|
161 |
* @param nYOff El desplazamiento de l?nea desde la esquina superior derecha
|
162 |
* de la banda accedida.
|
163 |
* @param nXSize Ancho de la regi?n en pixels de la banda que ser? accedida
|
164 |
* @param nYSize Altura de la regi?n en l?neas de la banda que ser? accedida
|
165 |
* @param BufXSize Ancho del buffer donde la regi?n de la im?gen ser? guardada
|
166 |
* @param BufYSize Altura del buffer donde la regi?n de la im?gen ser? guardada
|
167 |
* @param eBufType
|
168 |
*/
|
169 |
|
170 |
public void writeRaster(int nXOff, int nYOff, int nXSize, int nYSize, GdalBuffer buf, int eBufType)throws GdalException { |
171 |
GdalBuffer buffer = new GdalBuffer();
|
172 |
|
173 |
if ((nXOff < 0) || (nXOff > getRasterBandXSize()) || (nYOff < 0) || (nYOff > getRasterBandYSize())) |
174 |
throw new GdalException("Desplazamiento de la ventana fuera de rango."); |
175 |
|
176 |
if ((nXSize < 1) || (nXSize > getRasterBandXSize()) || (nYSize < 1) || (nYSize > getRasterBandYSize())) |
177 |
throw new GdalException("Tama?o de ventana incorrecto."); |
178 |
|
179 |
if (((nXSize + nXOff) > (getRasterBandXSize())) || ((nYSize + nYOff) > (getRasterBandYSize())))
|
180 |
throw new GdalException("Posicion de la ventana incorrecta."); |
181 |
|
182 |
if ((eBufType < 1) || (eBufType > 11)) |
183 |
throw new GdalException("Tipo de datos incorrecto."); |
184 |
|
185 |
if (buf == null) |
186 |
throw new GdalException("Buffer incorrecto"); |
187 |
|
188 |
switch(eBufType) {
|
189 |
case 0: |
190 |
return;
|
191 |
case 1: |
192 |
buffer.buffByte = buf.buffByte; |
193 |
break;
|
194 |
case 2: |
195 |
case 3: |
196 |
case 8: |
197 |
buffer.buffShort = buf.buffShort; |
198 |
break;
|
199 |
case 4: |
200 |
case 5: |
201 |
case 9: |
202 |
buffer.buffInt = buf.buffInt; |
203 |
break;
|
204 |
case 6: |
205 |
case 10: |
206 |
buffer.buffFloat = buf.buffFloat; |
207 |
break;
|
208 |
case 7: |
209 |
case 11: |
210 |
buffer.buffDouble = buf.buffDouble; |
211 |
break;
|
212 |
case 12: |
213 |
return;
|
214 |
} |
215 |
|
216 |
|
217 |
|
218 |
switch(eBufType) {
|
219 |
case 0: |
220 |
break;
|
221 |
case 1: |
222 |
this.WriteRaster(nXOff, nYOff, nXSize, nYSize, eBufType, buffer.buffByte);
|
223 |
break;
|
224 |
case 2: |
225 |
case 3: |
226 |
case 8: |
227 |
this.WriteRaster(nXOff, nYOff, nXSize, nYSize, eBufType, buffer.buffShort);
|
228 |
break;
|
229 |
case 4: |
230 |
case 5: |
231 |
case 9: |
232 |
this.WriteRaster(nXOff, nYOff, nXSize, nYSize, eBufType, buffer.buffInt);
|
233 |
break;
|
234 |
case 6: |
235 |
case 10: |
236 |
this.WriteRaster(nXOff, nYOff, nXSize, nYSize, eBufType, buffer.buffFloat);
|
237 |
break;
|
238 |
case 7: |
239 |
case 11: |
240 |
this.WriteRaster(nXOff, nYOff, nXSize, nYSize, eBufType, buffer.buffDouble);
|
241 |
break;
|
242 |
case 12: |
243 |
break;
|
244 |
} |
245 |
} |
246 |
|
247 |
/**
|
248 |
*Obtiene el tama?o en pixeles de la im?gen en el eje de las X
|
249 |
*@return Tama?o en pixeles del eje X
|
250 |
*@throws GdalException
|
251 |
*/
|
252 |
|
253 |
public int getRasterBandXSize()throws GdalException { |
254 |
return this.GetXSize(); |
255 |
} |
256 |
|
257 |
/**
|
258 |
*Obtiene el tama?o en pixeles de la im?gen en el eje de las Y
|
259 |
*@return Tama?o en pixeles del eje Y
|
260 |
*@throws GdalException
|
261 |
*/
|
262 |
|
263 |
public int getRasterBandYSize()throws GdalException { |
264 |
return this.GetYSize(); |
265 |
} |
266 |
|
267 |
|
268 |
/**
|
269 |
* Devuelve el n?mero de overviews que contiene la banda.
|
270 |
* @return N?mero de overviews
|
271 |
* @throws GdalException
|
272 |
*/
|
273 |
|
274 |
public int getOverviewCount()throws GdalException { |
275 |
return this.GetOverviewCount(); |
276 |
} |
277 |
|
278 |
|
279 |
/**
|
280 |
* Obtiene el overview indicado por el ?ndice "i".
|
281 |
*
|
282 |
* @param i indice del overview que se quiere recuperar.
|
283 |
* @return GdalRasterBand Banda correspondiente al overview selecccionado
|
284 |
* @throws GdalException
|
285 |
*/
|
286 |
|
287 |
public GdalRasterBand getOverview(int i)throws GdalException { |
288 |
Band cPtr_ov; |
289 |
|
290 |
if((i < 0) || (i >= getOverviewCount())) |
291 |
throw new GdalException("El overview seleccionado no existe"); |
292 |
|
293 |
cPtr_ov = this.GetOverview(i);
|
294 |
|
295 |
if (cPtr_ov == null || !(cPtr_ov instanceof GdalRasterBand)) |
296 |
throw new GdalException("No se ha podido obtener el overview"); |
297 |
|
298 |
return (GdalRasterBand)cPtr_ov;
|
299 |
} |
300 |
|
301 |
|
302 |
/**
|
303 |
* Devuelve el tama?o en X del bloque para esa banda
|
304 |
* @return Tama?o en pixeles del bloque en el eje X
|
305 |
* @throws GdalException
|
306 |
*/
|
307 |
|
308 |
public int getBlockXSize()throws GdalException { |
309 |
return this.GetBlockXSize(); |
310 |
} |
311 |
|
312 |
|
313 |
/**
|
314 |
* Devuelve el tama?o en Y del bloque para esa banda
|
315 |
* @return Tama?o en pixeles del bloque en el eje Y
|
316 |
* @throws GdalException
|
317 |
*/
|
318 |
|
319 |
public int getBlockYSize()throws GdalException { |
320 |
return this.GetBlockYSize(); |
321 |
} |
322 |
|
323 |
/**
|
324 |
* Devuelve el tipo de datos de la banda
|
325 |
* @return Tama?o en pixeles del bloque en el eje Y
|
326 |
* @throws GdalException
|
327 |
*/
|
328 |
|
329 |
public int getRasterDataType()throws GdalException { |
330 |
return this.getDataType(); |
331 |
} |
332 |
|
333 |
/**
|
334 |
* Obtiene la tabla de color asociada a la imagen
|
335 |
*/
|
336 |
public GdalColorTable getRasterColorTable()throws GdalException { |
337 |
GdalColorTable gct = null;
|
338 |
|
339 |
// if (cPtr == 0)
|
340 |
// throw new GdalException("No se ha podido acceder al archivo.");
|
341 |
|
342 |
ColorTable ct = this.GetColorTable();
|
343 |
|
344 |
if ((ct == null)) |
345 |
return null; |
346 |
|
347 |
gct = ((GdalColorTable)ct); |
348 |
|
349 |
return gct;
|
350 |
} |
351 |
|
352 |
/**
|
353 |
* Lee datos de la banda de la im?gen con una paleta asociada
|
354 |
*
|
355 |
* @return Devuelve un vector de bytes con el trozo de raster le?do.
|
356 |
* @param nXOff El desplazamiento del pixel desde la esquina superior derecha
|
357 |
* de la banda accedida.
|
358 |
* @param nYOff El desplazamiento de l?nea desde la esquina superior derecha
|
359 |
* de la banda accedida.
|
360 |
* @param nXSize Ancho de la regi?n en pixels de la banda que ser? accedida
|
361 |
* @param nYSize Altura de la regi?n en l?neas de la banda que ser? accedida
|
362 |
* @param BufXSize Ancho del buffer donde la regi?n de la im?gen ser? guardada
|
363 |
* @param BufYSize Altura del buffer donde la regi?n de la im?gen ser? guardada
|
364 |
* En caso de que bufXSize o bufYSize sean menores que 1, pasan a tener el mismo valor que
|
365 |
* nXSize y nYSize respectivamente para evitar buffers con tama?o 0.
|
366 |
* @param eBufType
|
367 |
*/
|
368 |
|
369 |
public GdalBuffer readRasterWithPalette(int nXOff, int nYOff, int nXSize, int nYSize, |
370 |
int bufXSize, int bufYSize, |
371 |
int eBufType)throws GdalException { |
372 |
|
373 |
// if (cPtr == 0)
|
374 |
// throw new GdalException("No se ha podido acceder al archivo.");
|
375 |
|
376 |
if ((nXOff<0) || (nXOff > getRasterBandXSize()) || (nYOff < 0) || (nYOff > getRasterBandYSize())) |
377 |
throw new GdalException("Desplazamiento de la ventana fuera de rango."); |
378 |
|
379 |
if ((nXSize < 1) || (nXSize > getRasterBandXSize()) || (nYSize < 1) || (nYSize > getRasterBandYSize())) |
380 |
throw new GdalException("Tama?o de ventana incorrecto."); |
381 |
|
382 |
if (((nXSize + nXOff) > (getRasterBandXSize())) || ((nYSize + nYOff) > (getRasterBandYSize())))
|
383 |
throw new GdalException("Posicion de la ventana incorrecta."); |
384 |
|
385 |
if ((eBufType < 1) || (eBufType > 11)) |
386 |
throw new GdalException("Tipo de datos incorrecto."); |
387 |
|
388 |
if (bufXSize < 1) |
389 |
bufXSize = nXSize; |
390 |
|
391 |
if (bufYSize < 1) |
392 |
bufYSize = nYSize; |
393 |
|
394 |
|
395 |
GdalBuffer buf = new GdalBuffer();
|
396 |
int i = 0; |
397 |
|
398 |
switch(eBufType) {
|
399 |
case 0: |
400 |
i = 0;
|
401 |
break;
|
402 |
case 1: |
403 |
i = this.ReadRaster(nXOff, nYOff, nXSize, nYSize, bufXSize, bufYSize, eBufType, buf.buffByte);
|
404 |
break;
|
405 |
case 2: |
406 |
case 3: |
407 |
case 8: |
408 |
i = this.ReadRaster(nXOff, nYOff, nXSize, nYSize, bufXSize, bufYSize, eBufType, buf.buffShort);
|
409 |
break;
|
410 |
case 4: |
411 |
case 5: |
412 |
case 9: |
413 |
i = this.ReadRaster(nXOff, nYOff, nXSize, nYSize, bufXSize, bufYSize, eBufType, buf.buffInt);
|
414 |
break;
|
415 |
case 6: |
416 |
case 10: |
417 |
i = this.ReadRaster(nXOff, nYOff, nXSize, nYSize, bufXSize, bufYSize, eBufType, buf.buffFloat);
|
418 |
break;
|
419 |
case 7: |
420 |
case 11: |
421 |
i = this.ReadRaster(nXOff, nYOff, nXSize, nYSize, bufXSize, bufYSize, eBufType, buf.buffDouble);
|
422 |
break;
|
423 |
case 12: |
424 |
i = 0;
|
425 |
break;
|
426 |
} |
427 |
|
428 |
|
429 |
if(i>0) |
430 |
return buf;
|
431 |
else
|
432 |
return null; |
433 |
} |
434 |
|
435 |
/**
|
436 |
*Devuelve el valor de NoData
|
437 |
*/
|
438 |
public double getRasterNoDataValue()throws GdalException { |
439 |
// if (cPtr == 0)
|
440 |
// throw new GdalException("No se ha podido acceder al archivo.");
|
441 |
|
442 |
Double[] aux = new Double[1]; |
443 |
GetNoDataValue(null);
|
444 |
return aux[0]; |
445 |
} |
446 |
|
447 |
/**
|
448 |
* Obtiene el valorDevuelve el valor de NoData
|
449 |
*/
|
450 |
public boolean existsNoDataValue()throws GdalException { |
451 |
// if (cPtr == 0)
|
452 |
// throw new GdalException("No se ha podido acceder al archivo.");
|
453 |
|
454 |
// int result = this.existsNoDataValueNat(cPtr);
|
455 |
|
456 |
return this.hasNoDataValue ; |
457 |
} |
458 |
|
459 |
public void setRasterNoDataValue(double val){ |
460 |
this.hasNoDataValue = true; |
461 |
|
462 |
SetNoDataValue(val); |
463 |
} |
464 |
|
465 |
/**
|
466 |
* Obtiene un array de Strings con los metadatos
|
467 |
*
|
468 |
* @throws GdalException
|
469 |
* @return Array de Strings que corresponden a los metadatos que ofrece la im?gen
|
470 |
*/
|
471 |
|
472 |
public String[] getMetadata()throws GdalException { |
473 |
// if (cPtr == 0)
|
474 |
// throw new GdalException("No se ha podido acceder al archivo.");
|
475 |
|
476 |
Vector<String> aux = this.GetMetadata_List(); |
477 |
String[] res = aux.toArray(new String[0]); |
478 |
if(res == null) |
479 |
return new String[0]; |
480 |
else return res; |
481 |
} |
482 |
|
483 |
/**
|
484 |
* Obtiene identificador que representa el tipo de banda de color.
|
485 |
* @return identificador del tipo de banda de color
|
486 |
* @throws GdalException
|
487 |
*/
|
488 |
|
489 |
public int getRasterColorInterpretation()throws GdalException { |
490 |
// if (cPtr == 0)
|
491 |
// throw new GdalException("No se ha podido acceder al archivo.");
|
492 |
|
493 |
int bandType = this.GetColorInterpretation(); |
494 |
return bandType;
|
495 |
} |
496 |
|
497 |
|
498 |
/**
|
499 |
* Asigna la interpretaci?n de color de la banda.
|
500 |
* Con algunos formatos no es posible modificar la interpretaci?n de color,
|
501 |
* tales como tiff y jpg. En el caso de tif, no hay error pero tampoco se
|
502 |
* produce el cambio en la interpretaci?n. En el caso de jpg, gdal lanza un error.
|
503 |
* 0 = "Undefined"
|
504 |
* 1 = "Gray";
|
505 |
* 2 = "Palette";
|
506 |
* 3 = "Red";
|
507 |
* 4 = "Green";
|
508 |
* 5 = "Blue";
|
509 |
* 6 = "Alpha";
|
510 |
* 7 = "Hue";
|
511 |
* 8 = "Saturation";
|
512 |
* 9 = "Lightness";
|
513 |
* 10 = "Cyan";
|
514 |
* 11 = "Magenta";
|
515 |
* 12 = "Yellow";
|
516 |
* 13 = "Black";
|
517 |
* 14 = "YCbCr_Y";
|
518 |
* 15 = "YCbCr_Cb";
|
519 |
* 16 = "YCbCr_Cr";
|
520 |
* @param bandType
|
521 |
* @throws GdalException
|
522 |
*/
|
523 |
public void setRasterColorInterpretation(int bandType) throws GdalException{ |
524 |
// if (cPtr == 0)
|
525 |
// throw new GdalException("No se ha podido acceder al archivo.");
|
526 |
|
527 |
if ((bandType < 0) || (bandType > 16)){ |
528 |
throw new GdalException("Tipo de banda incorrecto"); |
529 |
} |
530 |
|
531 |
int err = this.SetColorInterpretation(bandType); |
532 |
|
533 |
} |
534 |
|
535 |
} |