root / trunk / libraries / libRaster / src / org / gvsig / raster / buffer / cache / RasterCache.java @ 11074
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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.DataClassList; |
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import org.gvsig.raster.util.Histogram; |
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import org.gvsig.raster.util.HistogramException; |
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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 implements IBuffer { |
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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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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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|
498 |
public RasterBuffer adjustRasterInverseDistanceInterpolation(int w, int h, int[] bands) { |
499 |
return null; |
500 |
} |
501 |
|
502 |
public RasterBuffer adjustRasterBicubicSplineInterpolation(int w, int h, int[] bands) { |
503 |
return null; |
504 |
} |
505 |
|
506 |
public RasterBuffer adjustRasterBSplineInterpolation(int w, int h, int[] bands) { |
507 |
return null; |
508 |
} |
509 |
|
510 |
//*********************************************************
|
511 |
|
512 |
public void assign(int band, byte value) { |
513 |
for(int line = 0; line < height; line ++){ |
514 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
515 |
for(int col = 0; col < width; col ++){ |
516 |
try {
|
517 |
if(beginLine){
|
518 |
lru.cacheAccess(line, false);
|
519 |
beginLine = false;
|
520 |
} |
521 |
} catch (InvalidPageNumberException e) {return;} |
522 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
523 |
} |
524 |
} |
525 |
} |
526 |
|
527 |
public void assign(int band, short value) { |
528 |
for(int line = 0; line < height; line ++){ |
529 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
530 |
for(int col = 0; col < width; col ++){ |
531 |
try {
|
532 |
if(beginLine){
|
533 |
lru.cacheAccess(line, false);
|
534 |
beginLine = false;
|
535 |
} |
536 |
} catch (InvalidPageNumberException e) {return;} |
537 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
538 |
} |
539 |
} |
540 |
} |
541 |
|
542 |
public void assign(int band, int value) { |
543 |
for(int line = 0; line < height; line ++){ |
544 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
545 |
for(int col = 0; col < width; col ++){ |
546 |
try {
|
547 |
if(beginLine){
|
548 |
lru.cacheAccess(line, false);
|
549 |
beginLine = false;
|
550 |
} |
551 |
} catch (InvalidPageNumberException e) {return;} |
552 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
553 |
} |
554 |
} |
555 |
} |
556 |
|
557 |
public void assign(int band, float value) { |
558 |
for(int line = 0; line < height; line ++){ |
559 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
560 |
for(int col = 0; col < width; col ++){ |
561 |
try {
|
562 |
if(beginLine){
|
563 |
lru.cacheAccess(line, false);
|
564 |
beginLine = false;
|
565 |
} |
566 |
} catch (InvalidPageNumberException e) {return;} |
567 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
568 |
} |
569 |
} |
570 |
} |
571 |
|
572 |
public void assign(int band, double value) { |
573 |
for(int line = 0; line < height; line ++){ |
574 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
575 |
for(int col = 0; col < width; col ++){ |
576 |
try {
|
577 |
if(beginLine){
|
578 |
lru.cacheAccess(line, false);
|
579 |
beginLine = false;
|
580 |
} |
581 |
} catch (InvalidPageNumberException e) {return;} |
582 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
583 |
} |
584 |
} |
585 |
} |
586 |
|
587 |
/*
|
588 |
* (non-Javadoc)
|
589 |
* @see org.gvsig.fmap.driver.IBuffer#cloneBuffer()
|
590 |
*/
|
591 |
public IBuffer cloneBuffer(){
|
592 |
return null; |
593 |
} |
594 |
|
595 |
/*
|
596 |
* (non-Javadoc)
|
597 |
* @see org.gvsig.fmap.driver.IBuffer#interchangeBands(int, int)
|
598 |
*/
|
599 |
public void interchangeBands(int band1, int band2) { |
600 |
IBand b1 = getBand(band1); |
601 |
IBand b2 = getBand(band2); |
602 |
|
603 |
try {
|
604 |
cache.assignBand(band2, ((CacheBand)b1).cacheDataServer); |
605 |
cache.assignBand(band1, ((CacheBand)b2).cacheDataServer); |
606 |
} catch (IOException e) { |
607 |
e.printStackTrace(); |
608 |
} |
609 |
|
610 |
} |
611 |
|
612 |
/*
|
613 |
* (non-Javadoc)
|
614 |
* @see org.gvsig.fmap.driver.IBuffer#mallocOneBand(int, int, int, int)
|
615 |
*/
|
616 |
public void mallocOneBand(int dataType, int width, int height, int band) { |
617 |
|
618 |
} |
619 |
|
620 |
/*
|
621 |
* (non-Javadoc)
|
622 |
* @see org.gvsig.raster.driver.IBuffer#getBand(int)
|
623 |
*/
|
624 |
public IBand getBand(int band) { |
625 |
CacheBand cb = new CacheBand(getHeight(), getWidth());
|
626 |
cb.cacheDataServer = new CacheDataServer[cache.getNTotalPags()];
|
627 |
|
628 |
try {
|
629 |
cache.resetCache(); |
630 |
} catch (IOException e) { |
631 |
//TODO: EXCEPCIONES: Modificar el manejo de excepciones de RasterBuffer para q lance las apropiadas con cach?
|
632 |
return null; |
633 |
} |
634 |
for (int iPage = 0; iPage < cache.getNTotalPags(); iPage++) |
635 |
cb.cacheDataServer[iPage] = cache.getHddPage(iPage, band); |
636 |
|
637 |
return cb;
|
638 |
} |
639 |
|
640 |
/*
|
641 |
* (non-Javadoc)
|
642 |
* @see org.gvsig.fmap.driver.IBuffer#copyBand(int, org.gvsig.fmap.dataaccess.buffer.IBand)
|
643 |
*/
|
644 |
public void copyBand(int nBand, IBand band) { |
645 |
if(band instanceof CacheBand){ |
646 |
CacheBand cb = new CacheBand(band.getHeight(), band.getWidth());
|
647 |
cb.cacheDataServer = new CacheDataServer[((CacheBand)band).cacheDataServer.length];
|
648 |
|
649 |
for (int iPage = 0; iPage < cb.cacheDataServer.length; iPage++) { |
650 |
cb.cacheDataServer[iPage] = new CacheDataServer(null, nBand, iPage); |
651 |
String path = ((CacheBand)band).cacheDataServer[iPage].getPath();
|
652 |
File f = new File(path); |
653 |
if(f.exists()){
|
654 |
try {
|
655 |
RasterUtilities.copyFile(path, cb.cacheDataServer[iPage].getPath()); |
656 |
} catch (FileNotFoundException e) { |
657 |
//TODO: EXCEPCIONES: Modificar el manejo de excepciones de RasterBuffer para q lance las apropiadas con cach?
|
658 |
e.printStackTrace(); |
659 |
} catch (IOException e) { |
660 |
e.printStackTrace(); |
661 |
} |
662 |
} |
663 |
} |
664 |
try {
|
665 |
cache.deleteBand(nBand); |
666 |
cache.assignBand(nBand, cb.cacheDataServer); |
667 |
} catch (IOException e) { |
668 |
e.printStackTrace(); |
669 |
} |
670 |
|
671 |
} |
672 |
} |
673 |
|
674 |
/*
|
675 |
* (non-Javadoc)
|
676 |
* @see org.gvsig.fmap.driver.IBuffer#assignBand(int, org.gvsig.fmap.dataaccess.buffer.IBand)
|
677 |
*/
|
678 |
public void assignBand(int nBand, IBand band) { |
679 |
if(band instanceof CacheBand) { |
680 |
//((CacheBand)band).setFileName(nBand);
|
681 |
try {
|
682 |
cache.deleteBand(nBand); |
683 |
cache.assignBand(nBand, ((CacheBand)band).cacheDataServer); |
684 |
} catch (IOException e) { |
685 |
//TODO: EXCEPCIONES: Modificar el manejo de excepciones de RasterBuffer para q lance las apropiadas con cach?
|
686 |
return;
|
687 |
} |
688 |
|
689 |
} |
690 |
} |
691 |
|
692 |
/*
|
693 |
* (non-Javadoc)
|
694 |
* @see org.gvsig.fmap.driver.IBuffer#createBand(byte)
|
695 |
*/
|
696 |
public IBand createBand(byte defaultValue) { |
697 |
PageBandBuffer pageBuffer = new PageBandBuffer(getDataType(), getWidth(), cache.getHPag(), 1, true, 0); |
698 |
IBand band = null;
|
699 |
try {
|
700 |
band = createBand(pageBuffer); |
701 |
} catch (IOException e) { |
702 |
return null; |
703 |
} |
704 |
loadPage(new Byte(defaultValue), pageBuffer); |
705 |
return band;
|
706 |
} |
707 |
|
708 |
/*
|
709 |
* (non-Javadoc)
|
710 |
* @see org.gvsig.fmap.driver.IBuffer#assignBandToNotValid(int)
|
711 |
*/
|
712 |
public void assignBandToNotValid(int iBand) { |
713 |
PageBandBuffer pageBuffer = new PageBandBuffer(getDataType(), getWidth(), cache.getHPag(), 1, true, 0); |
714 |
|
715 |
switch(getDataType()){
|
716 |
case IBuffer.TYPE_BYTE: loadPage(new Byte((byte)getNotValidValue()), pageBuffer);break; |
717 |
case IBuffer.TYPE_SHORT: loadPage(new Short((short)getNotValidValue()), pageBuffer);break; |
718 |
case IBuffer.TYPE_INT: loadPage(new Integer((int)getNotValidValue()), pageBuffer);break; |
719 |
case IBuffer.TYPE_FLOAT: loadPage(new Float((float)getNotValidValue()), pageBuffer);break; |
720 |
case IBuffer.TYPE_DOUBLE: loadPage(new Double((double)getNotValidValue()), pageBuffer);break; |
721 |
} |
722 |
|
723 |
try {
|
724 |
CacheBand cb = (CacheBand)createBand(pageBuffer); |
725 |
cb.setFileName(iBand); |
726 |
assignBand(iBand, cb); |
727 |
} catch (IOException e) { |
728 |
//TODO: EXCEPCIONES: Modificar el manejo de excepciones de RasterBuffer para q lance las apropiadas con cach?
|
729 |
e.printStackTrace(); |
730 |
} |
731 |
} |
732 |
|
733 |
/**
|
734 |
* Creaci?n de una banda a partir de una pagina de cache cargada con datos.
|
735 |
* @param pageBuffer Pagina de cache cargada de datos
|
736 |
* @param numBand N?mero de banda a la que representa
|
737 |
* @return IBand
|
738 |
* @throws IOException
|
739 |
*/
|
740 |
private IBand createBand(PageBandBuffer pageBuffer) throws IOException{ |
741 |
CacheDataServer[] ds = new CacheDataServer[cache.getNTotalPags()]; |
742 |
for (int i = 0; i < cache.getNTotalPags(); i++) { |
743 |
ds[i] = new CacheDataServer(null, 0, i); |
744 |
ds[i].savePage(pageBuffer); |
745 |
} |
746 |
CacheBand band = new CacheBand(getHeight(), getWidth());
|
747 |
band.cacheDataServer = ds; |
748 |
return band;
|
749 |
} |
750 |
|
751 |
/**
|
752 |
* Carga la p?gina con el valor pasado por par?metro. El valor ser? del mismo tipo de dato
|
753 |
* que el buffer actual.
|
754 |
* @param value Valor a inicializar
|
755 |
* @param pageBuffer P?gina
|
756 |
*/
|
757 |
private void loadPage(Object value, PageBandBuffer pageBuffer){ |
758 |
switch(getDataType()){
|
759 |
case IBuffer.TYPE_BYTE: for(int i = 0 ; i < getWidth(); i ++) |
760 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
761 |
pageBuffer.setElem(j, i, 0, ((Byte)value).byteValue()); |
762 |
break;
|
763 |
case IBuffer.TYPE_SHORT: for(int i = 0 ; i < getWidth(); i ++) |
764 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
765 |
pageBuffer.setElem(j, i, 0, ((Short)value).shortValue()); |
766 |
break;
|
767 |
case IBuffer.TYPE_INT: for(int i = 0 ; i < getWidth(); i ++) |
768 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
769 |
pageBuffer.setElem(j, i, 0, ((Integer)value).intValue()); |
770 |
break;
|
771 |
case IBuffer.TYPE_FLOAT:for(int i = 0 ; i < getWidth(); i ++) |
772 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
773 |
pageBuffer.setElem(j, i, 0, ((Float)value).floatValue()); |
774 |
break;
|
775 |
case IBuffer.TYPE_DOUBLE:for(int i = 0 ; i < getWidth(); i ++) |
776 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
777 |
pageBuffer.setElem(j, i, 0, ((Double)value).doubleValue()); |
778 |
break;
|
779 |
} |
780 |
} |
781 |
|
782 |
public int getPercent() { |
783 |
return super.percent; |
784 |
} |
785 |
} |