root / trunk / libraries / libRaster / src / org / gvsig / raster / buffer / cache / RasterCache.java @ 11083
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2006 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*/
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package org.gvsig.raster.buffer.cache; |
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import java.io.File; |
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import java.io.FileNotFoundException; |
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import java.io.IOException; |
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import org.gvsig.raster.buffer.IBand; |
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import org.gvsig.raster.buffer.RasterBand; |
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import org.gvsig.raster.buffer.RasterBuffer; |
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import org.gvsig.raster.dataset.IBuffer; |
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import org.gvsig.raster.util.RasterUtilities; |
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/*
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* TODO: OPTIMIZACION: Trabajo de optimizaci?n en la velocidad e acceso a cach?.
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* TODO: FUNCIONALIDAD: Acabar de implementar los m?todos de acceso a datos, intercambio de bandas, etc...
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*/
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/**
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* Esta clase representa un buffer de datos cacheado. El estar en cache significa que
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* solo una parte de los datos estar?n en memoria y que gestiona, dependiendo de las
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* peticiones, que partes hay que cargar a memoria y en que momento. Para esto el buffer
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* no se llena de golpe sino que utiliza una clase que sirve los datos desde la fuente.
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* Esta clase servidora de datos debe implementar el interfaz ICacheDatasetSourcepara
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* servir datos de la forma requerida.
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*
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*/
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public class RasterCache extends RasterBuffer { |
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private Cache cache = null; |
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private LRUAlgorithm lru = null; |
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//TODO: FUNCIONALIDAD: Intercambio de bandas para el buffer cacheado
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public class CacheBand extends RasterBand{ |
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public ICacheDataSource[] cacheDataServer = null; |
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public CacheBand(int height, int width){ |
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super(height, width);
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} |
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public Object getLine(int line) { |
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return null; |
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} |
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public void setLine(int line, Object value){ |
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} |
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public Object getBuf(){ |
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return null; |
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} |
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public void setFileName(int numBand){ |
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for (int i = 0; i < cacheDataServer.length; i++) |
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((CacheDataServer)cacheDataServer[i]).setName(null, numBand, i);
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} |
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} |
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/**
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* Constructor. Asigna las variables de inicializaci?n y crea la estructura de
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* la cach? con los datos pasados.
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* @param dataType Tipo de dato del buffer
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* @param width Ancho del buffer
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* @param height Alto del buffer
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* @param nBands N?mero de bandas del buffer
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*/
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public RasterCache(int dataType, int width, int height, int nBands){ |
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cache = new Cache(nBands, dataType, width, height);
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lru = new LRUAlgorithm(cache);
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this.dataType = dataType;
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this.width = width;
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this.height = height;
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this.nBands = nBands;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.driver.IBuffer#isBandSwitchable()
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*/
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public boolean isBandSwitchable(){ |
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return true; |
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} |
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public void malloc(int dataType, int width, int height, int bandNr) { |
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} |
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/**
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* Obtiene la cach?
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* @return
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*/
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public Cache getCache() {
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return cache;
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} |
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/**
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* Asigna la cache
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* @param cache
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*/
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public void setCache(Cache cache) { |
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this.cache = cache;
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this.lru.setCache(cache);
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} |
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//*********************************************************
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public byte[][] getLineByte(int line) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {return null;} |
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return cache.getAccessPage().getLineByte((line & cache.getOffset()));
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} |
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public short[][] getLineShort(int line) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {return null;} |
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return cache.getAccessPage().getLineShort((line & cache.getOffset()));
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} |
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public int[][] getLineInt(int line) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {return null;} |
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return cache.getAccessPage().getLineInt((line & cache.getOffset()));
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} |
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public float[][] getLineFloat(int line) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {return null;} |
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return cache.getAccessPage().getLineFloat((line & cache.getOffset()));
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} |
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public double[][] getLineDouble(int line) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {return null;} |
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return cache.getAccessPage().getLineDouble((line & cache.getOffset()));
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} |
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//*********************************************************
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public void setLineByte(byte[][] data, int line) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setLineByte(data, (line & cache.getOffset())); |
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} |
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public void setLineShort(short[][] data, int line) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setLineShort(data, (line & cache.getOffset())); |
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} |
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public void setLineInt(int[][] data, int line) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setLineInt(data, (line & cache.getOffset())); |
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} |
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public void setLineFloat(float[][] data, int line) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setLineFloat(data, (line & cache.getOffset())); |
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} |
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public void setLineDouble(double[][] data, int line) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setLineDouble(data, (line & cache.getOffset())); |
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} |
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//*********************************************************
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public byte[] getLineFromBandByte(int line, int band) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {return null;} |
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return cache.getAccessPage().getLineFromBandByte((line & cache.getOffset()), band);
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} |
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public short[] getLineFromBandShort(int line, int band) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {return null;} |
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return cache.getAccessPage().getLineFromBandShort((line & cache.getOffset()), band);
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} |
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public int[] getLineFromBandInt(int line, int band) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {return null;} |
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return cache.getAccessPage().getLineFromBandInt((line & cache.getOffset()), band);
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} |
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public float[] getLineFromBandFloat(int line, int band) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {return null;} |
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return cache.getAccessPage().getLineFromBandFloat((line & cache.getOffset()), band);
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} |
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public double[] getLineFromBandDouble(int line, int band) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {return null;} |
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return cache.getAccessPage().getLineFromBandDouble((line & cache.getOffset()), band);
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} |
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//*********************************************************
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public void setLineInBandByte(byte[] data, int line, int band) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setLineInBandByte(data, (line & cache.getOffset()), band); |
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} |
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public void setLineInBandShort(short[] data, int line, int band) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setLineInBandShort(data, (line & cache.getOffset()), band); |
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} |
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public void setLineInBandInt(int[] data, int line, int band) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setLineInBandInt(data, (line & cache.getOffset()), band); |
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} |
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public void setLineInBandFloat(float[] data, int line, int band) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setLineInBandFloat(data, (line & cache.getOffset()), band); |
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} |
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public void setLineInBandDouble(double[] data, int line, int band) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setLineInBandDouble(data, (line & cache.getOffset()), band); |
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} |
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//*********************************************************
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public byte getElemByte(int line, int col, int band) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {
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return (byte)getNoDataValue(); //No leemos el dato |
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} |
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return cache.getAccessPage().getElemByte((line & cache.getOffset()), col, band);
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} |
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public short getElemShort(int line, int col, int band) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {
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return (short)getNoDataValue(); //No leemos el dato |
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} |
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return cache.getAccessPage().getElemShort((line & cache.getOffset()), col, band);
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} |
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public int getElemInt(int line, int col, int band) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {
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return (int)getNoDataValue(); //No leemos el dato |
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} |
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return cache.getAccessPage().getElemInt((line & cache.getOffset()), col, band);
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} |
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public float getElemFloat(int line, int col, int band) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {
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return (float)getNoDataValue(); //No leemos el dato |
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} |
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return cache.getAccessPage().getElemFloat((line & cache.getOffset()), col, band);
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} |
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public double getElemDouble(int line, int col, int band) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {
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return (double)getNoDataValue(); //No leemos el dato |
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} |
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return cache.getAccessPage().getElemDouble((line & cache.getOffset()), col, band);
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} |
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//*********************************************************
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public void setElem(int line, int col, int band, byte data) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) { return;} |
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cache.getAccessPage().setElem((line & cache.getOffset()), col, band, data); |
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} |
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public void setElem(int line, int col, int band, short data) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setElem((line & cache.getOffset()), col, band, data); |
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} |
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public void setElem(int line, int col, int band, int data) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setElem((line & cache.getOffset()), col, band, data); |
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} |
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public void setElem(int line, int col, int band, float data) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setElem((line & cache.getOffset()), col, band, data); |
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} |
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public void setElem(int line, int col, int band, double data) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setElem((line & cache.getOffset()), col, band, data); |
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} |
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//*********************************************************
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public void getElemByte(int line, int col, byte[] data) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {
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for (int iBand = 0; iBand < data.length; iBand++) |
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data[iBand] = (byte)getNoDataValue();
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} |
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cache.getAccessPage().getElemByte((line & cache.getOffset()), col, data); |
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} |
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public void getElemShort(int line, int col, short[] data) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {
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for (int iBand = 0; iBand < data.length; iBand++) |
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data[iBand] = (short)getNoDataValue();
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} |
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cache.getAccessPage().getElemShort((line & cache.getOffset()), col, data); |
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} |
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public void getElemInt(int line, int col, int[] data) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {
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for (int iBand = 0; iBand < data.length; iBand++) |
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data[iBand] = (int)getNoDataValue();
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} |
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cache.getAccessPage().getElemInt((line & cache.getOffset()), col, data); |
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} |
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public void getElemFloat(int line, int col, float[] data) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {
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for (int iBand = 0; iBand < data.length; iBand++) |
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data[iBand] = (float)getNoDataValue();
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} |
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cache.getAccessPage().getElemFloat((line & cache.getOffset()), col, data); |
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} |
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public void getElemDouble(int line, int col, double[] data) { |
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try {
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lru.cacheAccess(line, true);
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} catch (InvalidPageNumberException e) {
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for (int iBand = 0; iBand < data.length; iBand++) |
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data[iBand] = (double)getNoDataValue();
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} |
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cache.getAccessPage().getElemDouble((line & cache.getOffset()), col, data); |
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} |
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//*********************************************************
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public void setElemByte(int line, int col, byte[] data) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setElemByte((line & cache.getOffset()), col, data); |
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} |
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public void setElemShort(int line, int col, short[] data) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setElemShort((line & cache.getOffset()), col, data); |
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} |
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public void setElemInt(int line, int col, int[] data) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setElemInt((line & cache.getOffset()), col, data); |
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} |
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public void setElemFloat(int line, int col, float[] data) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setElemFloat((line & cache.getOffset()), col, data); |
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} |
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public void setElemDouble(int line, int col, double[] data) { |
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try {
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lru.cacheAccess(line, false);
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} catch (InvalidPageNumberException e) {return;} |
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cache.getAccessPage().setElemDouble((line & cache.getOffset()), col, data); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IBuffer#getBandBuffer(int)
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*/
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public IBuffer getBandBuffer(int iBand){ |
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RasterCache rasterCache = new RasterCache(getDataType(), getWidth(), getHeight(), 1); |
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CacheStruct cs = new CacheStruct();
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cs.setHPag(cache.getCacheStruct().getHPag()); |
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cs.setOffset(cache.getCacheStruct().getOffset()); |
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cs.setNPags(cache.getCacheStruct().getNPags()); |
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cs.setNBands(1);
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cs.setNGroups(cache.getCacheStruct().getNGroups()); |
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cs.setBitsPag(cache.getCacheStruct().getBitsPag()); |
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cs.setNTotalPags((int)(getHeight() / cache.getCacheStruct().getHPag()));
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cs.setDataType(cache.getCacheStruct().getDataType()); |
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Cache c = new Cache(cs, getWidth());
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rasterCache.setCache(c); |
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IBand band = getBand(iBand); |
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rasterCache.assignBand(0, band);
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return rasterCache;
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} |
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|
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IBuffer#replicateBand(int, int)
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*/
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public void replicateBand(int orig, int dest) { |
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} |
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|
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/*
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* (non-Javadoc)
|
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* @see org.gvsig.fmap.dataaccess.buffer.RasterBuffer#switchBands(int[])
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*/
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public void switchBands(int[] bandPosition){ |
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} |
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//*********************************************************
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|
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public RasterBuffer adjustRasterNearestNeighbourInterpolation(int w, int h, int[] bands) { |
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return null; |
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} |
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|
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public RasterBuffer adjustRasterBilinearInterpolation(int w, int h, int[] bands) { |
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return null; |
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} |
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|
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public RasterBuffer adjustRasterInverseDistanceInterpolation(int w, int h, int[] bands) { |
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return null; |
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} |
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|
499 |
public RasterBuffer adjustRasterBicubicSplineInterpolation(int w, int h, int[] bands) { |
500 |
return null; |
501 |
} |
502 |
|
503 |
public RasterBuffer adjustRasterBSplineInterpolation(int w, int h, int[] bands) { |
504 |
return null; |
505 |
} |
506 |
|
507 |
//*********************************************************
|
508 |
|
509 |
public void assign(int band, byte value) { |
510 |
for(int line = 0; line < height; line ++){ |
511 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
512 |
for(int col = 0; col < width; col ++){ |
513 |
try {
|
514 |
if(beginLine){
|
515 |
lru.cacheAccess(line, false);
|
516 |
beginLine = false;
|
517 |
} |
518 |
} catch (InvalidPageNumberException e) {return;} |
519 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
520 |
} |
521 |
} |
522 |
} |
523 |
|
524 |
public void assign(int band, short value) { |
525 |
for(int line = 0; line < height; line ++){ |
526 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
527 |
for(int col = 0; col < width; col ++){ |
528 |
try {
|
529 |
if(beginLine){
|
530 |
lru.cacheAccess(line, false);
|
531 |
beginLine = false;
|
532 |
} |
533 |
} catch (InvalidPageNumberException e) {return;} |
534 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
535 |
} |
536 |
} |
537 |
} |
538 |
|
539 |
public void assign(int band, int value) { |
540 |
for(int line = 0; line < height; line ++){ |
541 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
542 |
for(int col = 0; col < width; col ++){ |
543 |
try {
|
544 |
if(beginLine){
|
545 |
lru.cacheAccess(line, false);
|
546 |
beginLine = false;
|
547 |
} |
548 |
} catch (InvalidPageNumberException e) {return;} |
549 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
550 |
} |
551 |
} |
552 |
} |
553 |
|
554 |
public void assign(int band, float value) { |
555 |
for(int line = 0; line < height; line ++){ |
556 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
557 |
for(int col = 0; col < width; col ++){ |
558 |
try {
|
559 |
if(beginLine){
|
560 |
lru.cacheAccess(line, false);
|
561 |
beginLine = false;
|
562 |
} |
563 |
} catch (InvalidPageNumberException e) {return;} |
564 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
565 |
} |
566 |
} |
567 |
} |
568 |
|
569 |
public void assign(int band, double value) { |
570 |
for(int line = 0; line < height; line ++){ |
571 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
572 |
for(int col = 0; col < width; col ++){ |
573 |
try {
|
574 |
if(beginLine){
|
575 |
lru.cacheAccess(line, false);
|
576 |
beginLine = false;
|
577 |
} |
578 |
} catch (InvalidPageNumberException e) {return;} |
579 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
580 |
} |
581 |
} |
582 |
} |
583 |
|
584 |
/*
|
585 |
* (non-Javadoc)
|
586 |
* @see org.gvsig.fmap.driver.IBuffer#cloneBuffer()
|
587 |
*/
|
588 |
public IBuffer cloneBuffer(){
|
589 |
return null; |
590 |
} |
591 |
|
592 |
/*
|
593 |
* (non-Javadoc)
|
594 |
* @see org.gvsig.fmap.driver.IBuffer#interchangeBands(int, int)
|
595 |
*/
|
596 |
public void interchangeBands(int band1, int band2) { |
597 |
IBand b1 = getBand(band1); |
598 |
IBand b2 = getBand(band2); |
599 |
|
600 |
try {
|
601 |
cache.assignBand(band2, ((CacheBand)b1).cacheDataServer); |
602 |
cache.assignBand(band1, ((CacheBand)b2).cacheDataServer); |
603 |
} catch (IOException e) { |
604 |
e.printStackTrace(); |
605 |
} |
606 |
|
607 |
} |
608 |
|
609 |
/*
|
610 |
* (non-Javadoc)
|
611 |
* @see org.gvsig.fmap.driver.IBuffer#mallocOneBand(int, int, int, int)
|
612 |
*/
|
613 |
public void mallocOneBand(int dataType, int width, int height, int band) { |
614 |
|
615 |
} |
616 |
|
617 |
/*
|
618 |
* (non-Javadoc)
|
619 |
* @see org.gvsig.raster.driver.IBuffer#getBand(int)
|
620 |
*/
|
621 |
public IBand getBand(int band) { |
622 |
CacheBand cb = new CacheBand(getHeight(), getWidth());
|
623 |
cb.cacheDataServer = new CacheDataServer[cache.getNTotalPags()];
|
624 |
|
625 |
try {
|
626 |
cache.resetCache(); |
627 |
} catch (IOException e) { |
628 |
//TODO: EXCEPCIONES: Modificar el manejo de excepciones de RasterBuffer para q lance las apropiadas con cach?
|
629 |
return null; |
630 |
} |
631 |
for (int iPage = 0; iPage < cache.getNTotalPags(); iPage++) |
632 |
cb.cacheDataServer[iPage] = cache.getHddPage(iPage, band); |
633 |
|
634 |
return cb;
|
635 |
} |
636 |
|
637 |
/*
|
638 |
* (non-Javadoc)
|
639 |
* @see org.gvsig.fmap.driver.IBuffer#copyBand(int, org.gvsig.fmap.dataaccess.buffer.IBand)
|
640 |
*/
|
641 |
public void copyBand(int nBand, IBand band) { |
642 |
if(band instanceof CacheBand){ |
643 |
CacheBand cb = new CacheBand(band.getHeight(), band.getWidth());
|
644 |
cb.cacheDataServer = new CacheDataServer[((CacheBand)band).cacheDataServer.length];
|
645 |
|
646 |
for (int iPage = 0; iPage < cb.cacheDataServer.length; iPage++) { |
647 |
cb.cacheDataServer[iPage] = new CacheDataServer(null, nBand, iPage); |
648 |
String path = ((CacheBand)band).cacheDataServer[iPage].getPath();
|
649 |
File f = new File(path); |
650 |
if(f.exists()){
|
651 |
try {
|
652 |
RasterUtilities.copyFile(path, cb.cacheDataServer[iPage].getPath()); |
653 |
} catch (FileNotFoundException e) { |
654 |
//TODO: EXCEPCIONES: Modificar el manejo de excepciones de RasterBuffer para q lance las apropiadas con cach?
|
655 |
e.printStackTrace(); |
656 |
} catch (IOException e) { |
657 |
e.printStackTrace(); |
658 |
} |
659 |
} |
660 |
} |
661 |
try {
|
662 |
cache.deleteBand(nBand); |
663 |
cache.assignBand(nBand, cb.cacheDataServer); |
664 |
} catch (IOException e) { |
665 |
e.printStackTrace(); |
666 |
} |
667 |
|
668 |
} |
669 |
} |
670 |
|
671 |
/*
|
672 |
* (non-Javadoc)
|
673 |
* @see org.gvsig.fmap.driver.IBuffer#assignBand(int, org.gvsig.fmap.dataaccess.buffer.IBand)
|
674 |
*/
|
675 |
public void assignBand(int nBand, IBand band) { |
676 |
if(band instanceof CacheBand) { |
677 |
//((CacheBand)band).setFileName(nBand);
|
678 |
try {
|
679 |
cache.deleteBand(nBand); |
680 |
cache.assignBand(nBand, ((CacheBand)band).cacheDataServer); |
681 |
} catch (IOException e) { |
682 |
//TODO: EXCEPCIONES: Modificar el manejo de excepciones de RasterBuffer para q lance las apropiadas con cach?
|
683 |
return;
|
684 |
} |
685 |
|
686 |
} |
687 |
} |
688 |
|
689 |
/*
|
690 |
* (non-Javadoc)
|
691 |
* @see org.gvsig.fmap.driver.IBuffer#createBand(byte)
|
692 |
*/
|
693 |
public IBand createBand(byte defaultValue) { |
694 |
PageBandBuffer pageBuffer = new PageBandBuffer(getDataType(), getWidth(), cache.getHPag(), 1, true, 0); |
695 |
IBand band = null;
|
696 |
try {
|
697 |
band = createBand(pageBuffer); |
698 |
} catch (IOException e) { |
699 |
return null; |
700 |
} |
701 |
loadPage(new Byte(defaultValue), pageBuffer); |
702 |
return band;
|
703 |
} |
704 |
|
705 |
/*
|
706 |
* (non-Javadoc)
|
707 |
* @see org.gvsig.fmap.driver.IBuffer#assignBandToNotValid(int)
|
708 |
*/
|
709 |
public void assignBandToNotValid(int iBand) { |
710 |
PageBandBuffer pageBuffer = new PageBandBuffer(getDataType(), getWidth(), cache.getHPag(), 1, true, 0); |
711 |
|
712 |
switch(getDataType()){
|
713 |
case IBuffer.TYPE_BYTE: loadPage(new Byte((byte)getNotValidValue()), pageBuffer);break; |
714 |
case IBuffer.TYPE_SHORT: loadPage(new Short((short)getNotValidValue()), pageBuffer);break; |
715 |
case IBuffer.TYPE_INT: loadPage(new Integer((int)getNotValidValue()), pageBuffer);break; |
716 |
case IBuffer.TYPE_FLOAT: loadPage(new Float((float)getNotValidValue()), pageBuffer);break; |
717 |
case IBuffer.TYPE_DOUBLE: loadPage(new Double((double)getNotValidValue()), pageBuffer);break; |
718 |
} |
719 |
|
720 |
try {
|
721 |
CacheBand cb = (CacheBand)createBand(pageBuffer); |
722 |
cb.setFileName(iBand); |
723 |
assignBand(iBand, cb); |
724 |
} catch (IOException e) { |
725 |
//TODO: EXCEPCIONES: Modificar el manejo de excepciones de RasterBuffer para q lance las apropiadas con cach?
|
726 |
e.printStackTrace(); |
727 |
} |
728 |
} |
729 |
|
730 |
/**
|
731 |
* Creaci?n de una banda a partir de una pagina de cache cargada con datos.
|
732 |
* @param pageBuffer Pagina de cache cargada de datos
|
733 |
* @param numBand N?mero de banda a la que representa
|
734 |
* @return IBand
|
735 |
* @throws IOException
|
736 |
*/
|
737 |
private IBand createBand(PageBandBuffer pageBuffer) throws IOException{ |
738 |
CacheDataServer[] ds = new CacheDataServer[cache.getNTotalPags()]; |
739 |
for (int i = 0; i < cache.getNTotalPags(); i++) { |
740 |
ds[i] = new CacheDataServer(null, 0, i); |
741 |
ds[i].savePage(pageBuffer); |
742 |
} |
743 |
CacheBand band = new CacheBand(getHeight(), getWidth());
|
744 |
band.cacheDataServer = ds; |
745 |
return band;
|
746 |
} |
747 |
|
748 |
/**
|
749 |
* Carga la p?gina con el valor pasado por par?metro. El valor ser? del mismo tipo de dato
|
750 |
* que el buffer actual.
|
751 |
* @param value Valor a inicializar
|
752 |
* @param pageBuffer P?gina
|
753 |
*/
|
754 |
private void loadPage(Object value, PageBandBuffer pageBuffer){ |
755 |
switch(getDataType()){
|
756 |
case IBuffer.TYPE_BYTE: for(int i = 0 ; i < getWidth(); i ++) |
757 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
758 |
pageBuffer.setElem(j, i, 0, ((Byte)value).byteValue()); |
759 |
break;
|
760 |
case IBuffer.TYPE_SHORT: for(int i = 0 ; i < getWidth(); i ++) |
761 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
762 |
pageBuffer.setElem(j, i, 0, ((Short)value).shortValue()); |
763 |
break;
|
764 |
case IBuffer.TYPE_INT: for(int i = 0 ; i < getWidth(); i ++) |
765 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
766 |
pageBuffer.setElem(j, i, 0, ((Integer)value).intValue()); |
767 |
break;
|
768 |
case IBuffer.TYPE_FLOAT:for(int i = 0 ; i < getWidth(); i ++) |
769 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
770 |
pageBuffer.setElem(j, i, 0, ((Float)value).floatValue()); |
771 |
break;
|
772 |
case IBuffer.TYPE_DOUBLE:for(int i = 0 ; i < getWidth(); i ++) |
773 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
774 |
pageBuffer.setElem(j, i, 0, ((Double)value).doubleValue()); |
775 |
break;
|
776 |
} |
777 |
} |
778 |
} |