root / trunk / libraries / libRaster / src / org / gvsig / raster / buffer / cache / RasterReadOnlyHugeBuffer.java @ 11396
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package org.gvsig.raster.buffer.cache; |
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import java.awt.geom.Point2D; |
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import java.io.File; |
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import java.io.FileNotFoundException; |
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import org.gvsig.raster.RasterLibrary; |
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import org.gvsig.raster.buffer.IBand; |
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import org.gvsig.raster.buffer.RasterBuffer; |
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import org.gvsig.raster.buffer.RasterMemoryBuffer; |
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import org.gvsig.raster.dataset.Band; |
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import org.gvsig.raster.dataset.BandList; |
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import org.gvsig.raster.dataset.BandNotFoundInListException; |
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import org.gvsig.raster.dataset.FileNotExistsException; |
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import org.gvsig.raster.dataset.IBuffer; |
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import org.gvsig.raster.dataset.InvalidSetViewException; |
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import org.gvsig.raster.dataset.NotSupportedExtensionException; |
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import org.gvsig.raster.dataset.RasterDataset; |
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import org.gvsig.raster.dataset.RasterDriverException; |
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import org.gvsig.raster.shared.Extent; |
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/**
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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 RasterReadOnlyHugeBuffer extends RasterBuffer { |
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/**
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* Nombre de fichero de raster en disco
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*/
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private String fileName = null; |
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/**
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* Pagina cargada
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*/
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private IBuffer page = null; |
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/**
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* N?mero de p?gina cargada en IBuffer
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*/
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private int loadPage = -1; |
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/**
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* Lista de extents de cada p?gina
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*/
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//private Extent[] extentList = null;
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private int heightLastPage = 0; |
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private RasterDataset dataset = null; |
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private int bitsPag = 0; |
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/**
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* N?mero de p?ginas
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*/
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private int nPages = 0; |
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/**
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* Lista de bandas
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*/
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private BandList bandList = null; |
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private int[] drawableBands = null; |
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/**
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* Extensi?n asociada al buffer
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*/
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private int minX = 0, minY = 0, maxX = 0, maxY = 0; |
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/**
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* Para extraer el desplazamiento de una direcci?n (l?nea de raster) hay que hacer una operaci?n And con
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* con la altura de la p?gina -1. Por ejemplo, una p?gina de 16 l?neas de altura el desplazamiento ser?
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* 16 - 1 = 15 porque 15 en binario es 1111.
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*
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* Si queremos acceder a la linea del raster n?mero 83 (1010011) realizando la operaci?n And con el valor del
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* desplazamiento obtenemos (0001111 & 1010011 = 0000011), es decir el valor 3 en decimal. Esto quiere decir
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* que la l?nea 83 del raster es la 3 de su p?gina.
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*/
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private int offset = 1; |
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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
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* @param width Ancho
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* @param height Alto
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* @param bandNr Banda
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* @param orig
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* @throws RasterDriverException
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* @throws NotSupportedExtensionException
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* @throws FileNotFoundException
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*/
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public RasterReadOnlyHugeBuffer(int dataType, int width, int height, int nBand) |
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throws FileNotFoundException, NotSupportedExtensionException, RasterDriverException { |
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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 = nBand;
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} |
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/**
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* Asigna los parametros relativos al buffer. Estos son el nombre del fichero asociado
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* y la extensi?n asignada
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* @param fileName Nombre del fichero asociado
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* @param ext Extensi?n
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*/
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public void setBufferParams(String fileName, Extent ext) |
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throws InvalidSetViewException, FileNotExistsException, NotSupportedExtensionException {
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if(!new File(fileName).exists()) |
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throw new FileNotExistsException("File:" + fileName); |
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try {
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dataset = RasterDataset.open(null, fileName);
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} catch (RasterDriverException e) {
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throw new FileNotExistsException("File:" + fileName); |
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} |
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if( ext.minX() < dataset.getExtent().minX() || ext.minY() < dataset.getExtent().minY() ||
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ext.maxX() > dataset.getExtent().maxX() || ext.maxY() > dataset.getExtent().maxY()) |
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throw new InvalidSetViewException(""); |
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Point2D p1 = dataset.worldToRaster(new Point2D.Double(minX, maxY)); |
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Point2D p2 = dataset.worldToRaster(new Point2D.Double(maxX, minY)); |
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this.fileName = fileName;
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this.minX = (int)p1.getX(); |
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this.minY = (int)p1.getY(); |
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this.maxX = (int)p2.getX(); |
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this.maxY = (int)p2.getY(); |
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init(); |
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} |
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/**
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* Asigna los parametros relativos al buffer. Estos son el nombre del fichero asociado
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* y la extensi?n asignada
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* @param fileName Nombre del fichero asociado
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* @param ext Extensi?n
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*/
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public void setBufferParams(String fileName, int minX, int minY, int maxX, int maxY) |
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throws InvalidSetViewException, FileNotExistsException, NotSupportedExtensionException {
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if(!new File(fileName).exists()) |
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throw new FileNotExistsException("File:" + fileName); |
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try {
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dataset = RasterDataset.open(null, fileName);
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} catch (RasterDriverException e) {
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throw new FileNotExistsException("File:" + fileName); |
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} |
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this.fileName = fileName;
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this.minX = minX;
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this.minY = minY;
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this.maxX = maxX;
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this.maxY = maxY;
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init(); |
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} |
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/**
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* Acciones de inicializaci?n.
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* Crear el buffer de memoria y la lista de bandas, as? comno los bits empleados
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* por cada p?gina de memoria y el desplazamiento que supone para el calculo
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* de direcciones.
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*/
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private void init() { |
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//Calculo de los bits por p?gina
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int h = RasterLibrary.blockHeight;
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while(h > 1) { |
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h >>= 1;
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bitsPag ++; |
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} |
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//Calculo del desplazamiento
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offset = RasterLibrary.blockHeight - 1;
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page = new RasterMemoryBuffer(dataType, width, RasterLibrary.blockHeight, dataset.getBandCount(), true); |
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nPages = (int)Math.ceil((double)dataset.getHeight() / (double)RasterLibrary.blockHeight); |
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//extentList = calcExtentPages(dataset, nPages);
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double aux = ((double)dataset.getHeight() / (double)RasterLibrary.blockHeight); |
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heightLastPage = (int)((aux - (int)aux) * RasterLibrary.blockHeight); |
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drawableBands = new int[dataset.getBandCount()]; |
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for (int i = 0; i < drawableBands.length; i++) |
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drawableBands[i] = i; |
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bandList = new BandList();
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for(int i = 0; i < dataset.getBandCount();i++) { |
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try{
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Band band = new Band(dataset.getFName(), i, dataset.getDataType());
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band.setPositionToDrawInBuffer(i); |
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bandList.addBand(band, i); |
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}catch(BandNotFoundInListException ex) {
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//No a?adimos la banda
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} |
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} |
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} |
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/**
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* Calcula la extensi?n de las p?ginas en coordenadas del mundo real
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* @param dataset Dataset
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* @param nPages N?mero de p?ginas en que se divide el raster
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* @return Extensi?n de cada p?gina
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*/
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private Extent[] calcExtentPages(RasterDataset dataset, int nPages) { |
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Extent datasetExtent = dataset.getExtent(); |
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double h = (RasterLibrary.blockHeight * dataset.getExtent().height()) / dataset.getHeight();
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Extent[] ext = new Extent[nPages]; |
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double minX = datasetExtent.getMin().getX();
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double maxX = datasetExtent.getMax().getX();
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double maxY = datasetExtent.getMax().getY();
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double minY = maxY - h;
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for (int i = 0; i < ext.length; i++) { |
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ext[i] = new Extent(minX, maxY, maxX, minY);
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maxY = minY; |
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minY -= h; |
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if(minY < datasetExtent.minY())
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minY = datasetExtent.minY(); |
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} |
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return ext;
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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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* (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 false; |
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} |
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private void loadPage(int pag) { |
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if(pag == nPages - 1) { |
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page = new RasterMemoryBuffer(dataType, width, heightLastPage, dataset.getBandCount(), true); |
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dataset.getWindowRaster(0, RasterLibrary.blockHeight * pag, dataset.getWidth(), heightLastPage, bandList, page);
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} else {
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page = new RasterMemoryBuffer(dataType, width, RasterLibrary.blockHeight, dataset.getBandCount(), true); |
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dataset.getWindowRaster(0, RasterLibrary.blockHeight * pag, dataset.getWidth(), RasterLibrary.blockHeight, bandList, page);
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} |
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loadPage = pag; |
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} |
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//*********************************************************
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public byte[][] getLineByte(int line) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getLineByte(line & offset);
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} |
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public short[][] getLineShort(int line) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getLineShort(line & offset);
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} |
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public int[][] getLineInt(int line) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getLineInt(line & offset);
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} |
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public float[][] getLineFloat(int line) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getLineFloat(line & offset);
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} |
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public double[][] getLineDouble(int line) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getLineDouble(line & offset);
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} |
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//*********************************************************
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public byte[] getLineFromBandByte(int line, int band) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getLineFromBandByte(line & offset, band);
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} |
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public short[] getLineFromBandShort(int line, int band) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getLineFromBandShort(line & offset, band);
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} |
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public int[] getLineFromBandInt(int line, int band) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getLineFromBandInt(line & offset, band);
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} |
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public float[] getLineFromBandFloat(int line, int band) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getLineFromBandFloat(line & offset, band);
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} |
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public double[] getLineFromBandDouble(int line, int band) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getLineFromBandDouble(line & offset, 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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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getElemByte(line & offset, col, band);
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} |
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public short getElemShort(int line, int col, int band) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getElemShort(line & offset, col, band);
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} |
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public int getElemInt(int line, int col, int band) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getElemInt(line & offset, col, band);
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} |
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public float getElemFloat(int line, int col, int band) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getElemFloat(line & offset, col, band);
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} |
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public double getElemDouble(int line, int col, int band) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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return page.getElemDouble(line & offset, col, band);
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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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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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page.getElemByte(line & offset, col, data); |
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} |
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public void getElemShort(int line, int col, short[] data) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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page.getElemShort(line & offset, col, data); |
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} |
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public void getElemInt(int line, int col, int[] data) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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page.getElemInt(line & offset, col, data); |
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} |
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public void getElemFloat(int line, int col, float[] data) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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page.getElemFloat(line & offset, col, data); |
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} |
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public void getElemDouble(int line, int col, double[] data) { |
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int pag = line >> bitsPag;
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if(pag != loadPage)
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loadPage(pag); |
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page.getElemDouble(line & offset, col, data); |
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} |
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|
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//***********************************************
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//Obtiene una banda entera
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public IBand getBand(int band){ |
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return null; |
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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#getBandBuffer(int)
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*/
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public IBuffer getBandBuffer(int iBand){ |
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return null; |
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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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* (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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public RasterBuffer adjustRasterBilinearInterpolation(int w, int h, int[] bands) { |
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return null; |
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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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public RasterBuffer adjustRasterBicubicSplineInterpolation(int w, int h, int[] bands) { |
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return null; |
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} |
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public RasterBuffer adjustRasterBSplineInterpolation(int w, int h, int[] bands) { |
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IBuffer#cloneBuffer()
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*/
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public IBuffer cloneBuffer(){
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IBuffer#mallocOneBand(int, int, int, int)
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*/
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public void mallocOneBand(int dataType, int width, int height, int band) { |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.IBuffer#copyBand(int, org.gvsig.fmap.dataaccess.buffer.IBand)
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*/
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public void copyBand(int nBand, IBand band) { |
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|
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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#assignBand(int, org.gvsig.fmap.dataaccess.buffer.IBand)
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*/
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public void assignBand(int nBand, IBand band) { |
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|
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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#createBand(byte)
|
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*/
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public IBand createBand(byte defaultValue) { |
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return null; |
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} |
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|
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public void assignBandToNotValid(int iBand) {} |
| 482 |
public void assign(int band, byte value) {} |
| 483 |
public void assign(int band, short value) {} |
| 484 |
public void assign(int band, int value) {} |
| 485 |
public void assign(int band, float value) {} |
| 486 |
public void assign(int band, double value) {} |
| 487 |
public void interchangeBands(int band1, int band2) {} |
| 488 |
public void setElem(int line, int col, int band, byte data) {} |
| 489 |
public void setElem(int line, int col, int band, short data) {} |
| 490 |
public void setElem(int line, int col, int band, int data) {} |
| 491 |
public void setElem(int line, int col, int band, float data) {} |
| 492 |
public void setElem(int line, int col, int band, double data) {} |
| 493 |
public void setElemByte(int line, int col, byte[] data) {} |
| 494 |
public void setElemDouble(int line, int col, double[] data) {} |
| 495 |
public void setElemFloat(int line, int col, float[] data) {} |
| 496 |
public void setElemInt(int line, int col, int[] data) {} |
| 497 |
public void setElemShort(int line, int col, short[] data) {} |
| 498 |
public void setLineByte(byte[][] data, int line) {} |
| 499 |
public void setLineDouble(double[][] data, int line) {} |
| 500 |
public void setLineFloat(float[][] data, int line) {} |
| 501 |
public void setLineInBandByte(byte[] data, int line, int band) {} |
| 502 |
public void setLineInBandDouble(double[] data, int line, int band) {} |
| 503 |
public void setLineInBandFloat(float[] data, int line, int band) {} |
| 504 |
public void setLineInBandInt(int[] data, int line, int band) {} |
| 505 |
public void setLineInBandShort(short[] data, int line, int band) {} |
| 506 |
public void setLineInt(int[][] data, int line) {} |
| 507 |
public void setLineShort(short[][] data, int line) {} |
| 508 |
|
| 509 |
} |