svn-gvsig-desktop / trunk / libraries / libRaster / src / org / gvsig / raster / buffer / cache / CacheDataServer.java @ 27361
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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.awt.geom.AffineTransform; |
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import java.io.BufferedInputStream; |
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import java.io.BufferedOutputStream; |
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import java.io.DataInputStream; |
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import java.io.DataOutputStream; |
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import java.io.File; |
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import java.io.FileInputStream; |
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import java.io.FileNotFoundException; |
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import java.io.FileOutputStream; |
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import java.io.IOException; |
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import org.gvsig.raster.RasterLibrary; |
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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.GeoRasterWriter; |
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import org.gvsig.raster.dataset.IBuffer; |
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import org.gvsig.raster.dataset.IDataWriter; |
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import org.gvsig.raster.dataset.NotSupportedExtensionException; |
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import org.gvsig.raster.dataset.Params; |
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import org.gvsig.raster.dataset.RasterDataset; |
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import org.gvsig.raster.dataset.Params.Param; |
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import org.gvsig.raster.dataset.io.RasterDriverException; |
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import org.gvsig.raster.process.RasterTask; |
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import org.gvsig.raster.process.RasterTaskQueue; |
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/**
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* Servidor de datos de cach?. Esta clase es la encargada de volcar a disco las
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* p?ginas de cach? y recuperar las cuando le son solicitadas. Por ello debe
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* implementar el interfaz ICacheDataSource con dos m?todos loadPage y savePage.
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*
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* Ambos a partir del n?mero de p?gina recuperaran o salvaran de/a disco una p?gina.
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class CacheDataServer implements ICacheDataSource { |
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/**
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* Directorio temporal para la cach?. Si gastamos el mismo que andami este se ocupar? de gestionar su
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* destrucci?n al cerrar gvSIG.
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*/
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private String tempDirectoryPath; |
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private String id = null; // Identificador de fichero. |
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/**
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* Constructor.
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* Crea el identificador para todos los trozos de cach? que se guardar?n en disco.
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* @param id Identificador de fichero. Si este es null se calcula uno autom?ticamente
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* @param numBand N?mero de banda
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* @param numPag N?mero de p?gina
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*/
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public CacheDataServer(String id, int numBand, int numPag) { |
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tempDirectoryPath = RasterLibrary.getTemporalPath(); |
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setName(id, numBand, numPag); |
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} |
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/**
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* Crea el identificador para todos los trozos de cach? que se guardar?n en disco.
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* @param id Identificador de fichero. Si este es null se calcula uno autom?ticamente
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* @param numBand N?mero de banda
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* @param numPag N?mero de p?gina
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*/
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public void setName(String id, int numBand, int numPag) { |
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String oldFileName = tempDirectoryPath + File.separator + this.id; |
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if (id == null) |
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this.id = Long.toString(System.currentTimeMillis()) + "-" + numPag + "-" + numBand; |
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else
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this.id = id + "-" + numPag + "-" + numBand; |
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String newFileName = tempDirectoryPath + File.separator + this.id; |
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File newFile = new File(newFileName); |
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File oldFile = new File(oldFileName); |
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if (oldFile.exists())
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oldFile.renameTo(newFile); |
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.cache.ICacheDataSource#loadPage(int, org.gvsig.fmap.dataaccess.cache.PageBuffer)
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*/
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public void loadPage(PageBandBuffer pageBuffer) throws InterruptedException { |
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String inFileName = tempDirectoryPath + File.separator + id; |
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File file = new File(inFileName); |
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if (!file.exists())
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return;
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DataInputStream dis;
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try {
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dis = new DataInputStream(new BufferedInputStream(new FileInputStream(file))); |
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read(dis, pageBuffer); |
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dis.close(); |
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} catch (FileNotFoundException e) { |
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return;
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} catch (IOException ex) { |
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// TODO: EXCEPTION: Lanzar IO y FileNotFound
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ex.printStackTrace(); |
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return;
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} |
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.dataaccess.cache.ICacheDataSource#savePage(int, org.gvsig.fmap.dataaccess.cache.PageBuffer)
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*/
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public void savePage(PageBandBuffer pageBuffer) throws IOException, InterruptedException { |
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tempDirectoryPath = RasterLibrary.getTemporalPath(); |
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String fileName = tempDirectoryPath + File.separator + id; |
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File f = new File(fileName); |
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DataOutputStream dos = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(f))); |
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save(dos, pageBuffer); |
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dos.close(); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.dataaccess.cache.ICacheDataSource#delete()
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*/
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public void delete() { |
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String fileName = tempDirectoryPath + File.separator + id; |
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File f = new File(fileName); |
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if (f.exists()) {
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f.delete(); |
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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.raster.dataaccess.cache.ICacheDataSource#getPath()
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*/
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public String getPath() { |
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return tempDirectoryPath + File.separator + id; |
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} |
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//TODO: TEST: Implementar y probar el cacheado para tipos de datos != de byte
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/**
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* Tilea un raster en disco para que sea accesible por la cach?.
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* @param fileName Nombre del fichero a tilear
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* @param pageLines N?mero de l?neas de cada tile
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* @throws IOException
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* @throws RasterDriverException
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* @throws NotSupportedExtensionException
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*/
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public void cachear(String fileName, int pageLines)throws IOException, NotSupportedExtensionException, RasterDriverException, InterruptedException{ |
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if (id == null) |
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id = Long.toString(System.currentTimeMillis()); |
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RasterDataset grf = RasterDataset.open(null, fileName);
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// Creamos un BandList con todas las bandas del fichero
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BandList bandList = new BandList();
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for (int i = 0; i < grf.getBandCount(); i++) { |
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try {
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Band band = new Band(grf.getFName(), i, grf.getDataType()[i]);
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bandList.addBand(band, i); |
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bandList.addDrawableBand(i, 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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int pages = (int) Math.ceil(grf.getHeight() / pageLines); |
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tempDirectoryPath = RasterLibrary.getTemporalPath(); |
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PageBandBuffer pageBuffer = new PageBandBuffer(grf.getDataType()[0], grf.getWidth(), pageLines, grf.getBandCount(), true, 0); |
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int y = 0; |
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for (int i = 0; i < pages; i++) { |
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grf.getWindowRaster(0, y, grf.getWidth(), pageLines, bandList, pageBuffer);
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String outFileName = tempDirectoryPath + File.separator + id + "-" + i; |
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File f = new File(outFileName); |
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DataOutputStream dos = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(f))); |
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save(dos, pageBuffer); |
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dos.close(); |
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y += pageLines; |
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} |
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//Solo para pruebas
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//convertFromByteFileToTif(grf, pageBuffer, pageLines);
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} |
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/**
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* Funci?n para pruebas.
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* Convierte los ficheros generados por la funci?n cachear en ficheros tif para comprobar que est?n
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* bien generados.
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* @param grf
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* @param pageBuffer
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* @param pageLines
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* @throws IOException
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* @deprecated Este m?todo no se usa pero es necesario para testeo
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*/
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public void convertFromByteFileToTif(RasterDataset grf, PageBandBuffer pageBuffer, int pageLines)throws IOException, InterruptedException { |
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int w = pageBuffer.getWidth();
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int h = pageBuffer.getHeight();
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int pages = (int) Math.ceil(grf.getHeight() / pageLines); |
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GeoRasterWriter grw = null;
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PageBandBuffer pageBuffer2 = new PageBandBuffer(grf.getDataType()[0], grf.getWidth(), pageLines, grf.getBandCount(), true, 0); |
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for (int i = 0; i < pages; i++) { |
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String inFileName = tempDirectoryPath + File.separator + id + "-" + i; |
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File f = new File(inFileName); |
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DataInputStream dis = new DataInputStream(new BufferedInputStream(new FileInputStream(f))); |
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byte[] b; |
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switch (pageBuffer.getDataType()) {
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case 0: |
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b = new byte[pageBuffer.getWidth() * pageBuffer.getHeight() * pageBuffer.getBandCount()]; |
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dis.readFully(b); |
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for (int iBand = 0; iBand < pageBuffer.getBandCount(); iBand++) { |
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for (int line = 0; line < pageBuffer.getHeight(); line++) { |
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byte[] linea = new byte[w]; |
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for (int d = 0; d < linea.length; d++) |
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linea[d] = b[(iBand * w * h) + (line * w) + d]; |
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pageBuffer2.setLineInBandByte(linea, line, iBand); |
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} |
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} |
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break;
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} |
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dis.close(); |
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IDataWriter dataWriter1 = new WriterBufferCompleteServer(pageBuffer2);
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try {
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GeoRasterWriter writer = GeoRasterWriter.getWriter(inFileName + ".tif");
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Params params = writer.getParams(); |
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int newPosBlockSize = 7; |
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Param p = params.getParamById("blocksize");
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for (int j = 0; j < p.list.length; j++) { |
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if (p.list[i].equals(String.valueOf(pageLines))) |
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newPosBlockSize = j; |
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} |
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params.changeParamValue("blocksize", new Integer(newPosBlockSize)); |
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grw = GeoRasterWriter.getWriter(dataWriter1, |
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inFileName + ".tif",
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pageBuffer2.getBandCount(), |
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new AffineTransform(), |
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pageBuffer2.getWidth(), |
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pageBuffer2.getHeight(), |
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pageBuffer2.getDataType(), |
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params, |
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null);
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} catch (NotSupportedExtensionException e) {
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e.printStackTrace(); |
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} catch (RasterDriverException e) {
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e.printStackTrace(); |
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} |
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grw.dataWrite(); |
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grw.writeClose(); |
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} |
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} |
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/**
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* Salva un PageBuffer sobre un stream DataOutpuStream dependiendo del tipo de dato del
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* buffer.
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* @param dos DataOutputStream
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* @param pageBuffer PageBuffer
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* @throws IOException
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* @throws InterruptedException
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*/
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private void save(DataOutputStream dos, PageBandBuffer pageBuffer) throws IOException, InterruptedException { |
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RasterTask task = RasterTaskQueue.get(Thread.currentThread().toString());
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switch (pageBuffer.getDataType()) {
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case IBuffer.TYPE_BYTE:
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for (int iBand = 0; iBand < pageBuffer.getBandCount(); iBand++) { |
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for (int line = 0; line < pageBuffer.getHeight(); line++) { |
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// for(int col = 0; col < pageBuffer.getWidth(); col ++)
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// dos.writeByte(pageBuffer.getElemByte(line, col, iBand));
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dos.write(pageBuffer.getLineFromBandByte(line, iBand)); |
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if(task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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} |
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break;
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case IBuffer.TYPE_SHORT:
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for (int iBand = 0; iBand < pageBuffer.getBandCount(); iBand++) |
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for (int line = 0; line < pageBuffer.getHeight(); line++) { |
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for (int col = 0; col < pageBuffer.getWidth(); col++) |
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dos.writeShort(pageBuffer.getElemShort(line, col, iBand)); |
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if(task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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break;
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case IBuffer.TYPE_INT:
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for (int iBand = 0; iBand < pageBuffer.getBandCount(); iBand++) |
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for (int line = 0; line < pageBuffer.getHeight(); line++) { |
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for (int col = 0; col < pageBuffer.getWidth(); col++) |
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dos.writeInt(pageBuffer.getElemInt(line, col, iBand)); |
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if(task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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break;
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case IBuffer.TYPE_FLOAT:
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for (int iBand = 0; iBand < pageBuffer.getBandCount(); iBand++) |
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for (int line = 0; line < pageBuffer.getHeight(); line++) { |
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for (int col = 0; col < pageBuffer.getWidth(); col++) |
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dos.writeFloat(pageBuffer.getElemFloat(line, col, iBand)); |
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if(task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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break;
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case IBuffer.TYPE_DOUBLE:
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for (int iBand = 0; iBand < pageBuffer.getBandCount(); iBand++) |
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for (int line = 0; line < pageBuffer.getHeight(); line++) { |
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for (int col = 0; col < pageBuffer.getWidth(); col++) |
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dos.writeDouble(pageBuffer.getElemDouble(line, col, iBand)); |
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if(task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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break;
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} |
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} |
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/**
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* Carga un PageBuffer desde un stream DataInputStream dependiendo del tipo de dato del
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* buffer.
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* @param dis DataInputStream
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* @param pageBuffer PageBuffer
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* @throws IOException
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* @throws InterruptedException
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*/
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private void read(DataInputStream dis, PageBandBuffer pageBuffer) throws IOException, InterruptedException { |
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RasterTask task = RasterTaskQueue.get(Thread.currentThread().toString());
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int w = pageBuffer.getWidth();
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int h = pageBuffer.getHeight();
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int wxh = w * h;
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int j = 0; |
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switch (pageBuffer.getDataType()) {
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case IBuffer.TYPE_BYTE:
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byte[] b = new byte[pageBuffer.getWidth() * pageBuffer.getHeight() * pageBuffer.getBandCount()]; |
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dis.readFully(b); |
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// while(j < b.length){ b[j] = dis.readByte(); j ++; }
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for (int iBand = 0; iBand < pageBuffer.getBandCount(); iBand++) { |
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for (int line = 0; line < pageBuffer.getHeight(); line++) { |
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byte[] linea = new byte[w]; |
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for (int d = 0; d < linea.length; d++) |
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linea[d] = b[(iBand * wxh) + (line * w) + d]; |
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pageBuffer.setLineInBandByte(linea, line, iBand); |
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} |
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if(task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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break;
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case IBuffer.TYPE_SHORT:
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short[] s = new short[pageBuffer.getWidth() * pageBuffer.getHeight() * pageBuffer.getBandCount()]; |
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while (j < s.length) {
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s[j] = dis.readShort(); |
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j++; |
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} |
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for (int iBand = 0; iBand < pageBuffer.getBandCount(); iBand++) { |
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for (int line = 0; line < pageBuffer.getHeight(); line++) { |
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short[] linea = new short[w]; |
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for (int x = 0; x < linea.length; x++) |
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linea[x] = s[(iBand * wxh) + (line * w) + x]; |
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pageBuffer.setLineInBandShort(linea, line, iBand); |
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} |
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if(task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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break;
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case IBuffer.TYPE_INT:
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int[] i = new int[pageBuffer.getWidth() * pageBuffer.getHeight() * pageBuffer.getBandCount()]; |
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while (j < i.length) {
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i[j] = dis.readInt(); |
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j++; |
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} |
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for (int iBand = 0; iBand < pageBuffer.getBandCount(); iBand++) { |
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for (int line = 0; line < pageBuffer.getHeight(); line++) { |
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int[] linea = new int[w]; |
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for (int x = 0; x < linea.length; x++) |
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linea[x] = i[(iBand * wxh) + (line * w) + x]; |
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pageBuffer.setLineInBandInt(linea, line, iBand); |
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} |
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if(task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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break;
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case IBuffer.TYPE_FLOAT:
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float[] f = new float[pageBuffer.getWidth() * pageBuffer.getHeight() * pageBuffer.getBandCount()]; |
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while (j < f.length) {
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f[j] = dis.readFloat(); |
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j++; |
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} |
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for (int iBand = 0; iBand < pageBuffer.getBandCount(); iBand++) { |
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for (int line = 0; line < pageBuffer.getHeight(); line++) { |
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float[] linea = new float[w]; |
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for (int x = 0; x < linea.length; x++) |
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linea[x] = f[(iBand * wxh) + (line * w) + x]; |
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pageBuffer.setLineInBandFloat(linea, line, iBand); |
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} |
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if(task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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break;
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case IBuffer.TYPE_DOUBLE:
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double[] d = new double[pageBuffer.getWidth() * pageBuffer.getHeight() * pageBuffer.getBandCount()]; |
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while (j < d.length) {
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d[j] = dis.readDouble(); |
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j++; |
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} |
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for (int iBand = 0; iBand < pageBuffer.getBandCount(); iBand++) { |
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for (int line = 0; line < pageBuffer.getHeight(); line++) { |
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double[] linea = new double[w]; |
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for (int x = 0; x < linea.length; x++) |
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linea[x] = d[(iBand * wxh) + (line * w) + x]; |
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pageBuffer.setLineInBandDouble(linea, line, iBand); |
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} |
| 426 |
if(task.getEvent() != null) |
| 427 |
task.manageEvent(task.getEvent()); |
| 428 |
} |
| 429 |
break;
|
| 430 |
} |
| 431 |
} |
| 432 |
|
| 433 |
//---------------------------------------------------------------
|
| 434 |
//TILEADO A BASE DE TIFF: Desechado porque es muy lento
|
| 435 |
|
| 436 |
/*public void loadPage(int nPag, PageBuffer pageBuffer) {
|
| 437 |
String fileName = tempDirectoryPath + File.separator + id + "-" + nPag + ".tif";
|
| 438 |
File file = new File(id);
|
| 439 |
if(!file.exists())
|
| 440 |
return; //El trozo no ha sido volcado a disco por lo que no se carga.
|
| 441 |
|
| 442 |
GeoRasterFile grf = GeoRasterFile.openFile(null, fileName);
|
| 443 |
|
| 444 |
//Creamos un BandList con todas las bandas del fichero
|
| 445 |
BandList bandList = new BandList();
|
| 446 |
for(int i = 0; i < grf.getBandCount();i++){
|
| 447 |
try{
|
| 448 |
Band band = new Band(grf.getName(), i, grf.getDataType());
|
| 449 |
bandList.addBand(band, i);
|
| 450 |
}catch(BandFoundInListException ex){
|
| 451 |
//No a?adimos la banda
|
| 452 |
}
|
| 453 |
}
|
| 454 |
grf.getWindowRaster(0, 0, grf.getWidth(), grf.getHeight(), bandList, pageBuffer);
|
| 455 |
}*/
|
| 456 |
|
| 457 |
|
| 458 |
/*public void savePage(int nPag, PageBuffer pageBuffer) throws IOException {
|
| 459 |
createTempDirectory();
|
| 460 |
String fileName = tempDirectoryPath + File.separator + id + "-" + nPag + ".tif";
|
| 461 |
IDataWriter dataWriter = new WriterBufferServer(pageBuffer);
|
| 462 |
GeoRasterWriter grw = GeoRasterWriter.getWriter(dataWriter,
|
| 463 |
fileName,
|
| 464 |
pageBuffer.getHeight(), //Block size
|
| 465 |
pageBuffer.getBandCount(),
|
| 466 |
new Extent(0, 0, pageBuffer.getWidth() - 1, pageBuffer.getHeight() - 1),
|
| 467 |
0,
|
| 468 |
pageBuffer.getWidth(),
|
| 469 |
pageBuffer.getHeight(),
|
| 470 |
pageBuffer.getDataType());
|
| 471 |
grw.dataWrite();
|
| 472 |
grw.writeClose();
|
| 473 |
|
| 474 |
}*/
|
| 475 |
} |