gvsig-raster / org.gvsig.raster / trunk / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.impl / src / main / java / org / gvsig / raster / impl / buffer / cache / CacheDataServer.java @ 2623
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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package org.gvsig.raster.impl.buffer.cache; |
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import java.awt.Rectangle; |
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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.fmap.dal.coverage.RasterLocator; |
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import org.gvsig.fmap.dal.coverage.dataset.Buffer; |
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import org.gvsig.fmap.dal.coverage.datastruct.Params; |
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import org.gvsig.fmap.dal.coverage.exception.NotSupportedExtensionException; |
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import org.gvsig.fmap.dal.coverage.exception.ProcessInterruptedException; |
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import org.gvsig.fmap.dal.coverage.exception.QueryException; |
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import org.gvsig.fmap.dal.coverage.exception.RasterDriverException; |
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import org.gvsig.fmap.dal.coverage.store.DataServerWriter; |
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import org.gvsig.fmap.dal.coverage.store.RasterQuery; |
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import org.gvsig.fmap.dal.coverage.store.RasterWriter; |
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import org.gvsig.fmap.dal.coverage.util.FileUtils; |
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import org.gvsig.raster.impl.DefaultRasterManager; |
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import org.gvsig.raster.impl.provider.AbstractRasterProvider; |
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import org.gvsig.raster.impl.store.DefaultRasterStore; |
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import org.gvsig.raster.impl.store.ParamImpl; |
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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 = null; |
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private String id = null; // Identificador de fichero. |
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private FileUtils file = RasterLocator.getManager().getFileUtils();
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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 = file.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) { |
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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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public void savePage(PageBandBuffer pageBuffer) throws IOException { |
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tempDirectoryPath = file.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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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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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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* @throws QueryException
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*/
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public void cachear(String fileName, int pageLines) |
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throws IOException, NotSupportedExtensionException, RasterDriverException, ProcessInterruptedException, QueryException { |
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if (id == null) |
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id = Long.toString(System.currentTimeMillis()); |
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AbstractRasterProvider provider = AbstractRasterProvider.singleDatasetInstance(null, fileName);
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int pages = (int) Math.ceil(provider.getHeight() / pageLines); |
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tempDirectoryPath = file.getTemporalPath(); |
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//PageBandBuffer pageBuffer = new PageBandBuffer(provider.getDataType()[0], (int)provider.getWidth(), pageLines, provider.getBandCount(), true, 0);
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Buffer pageBuffer = null; |
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DefaultRasterStore store = new DefaultRasterStore();
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store.setProvider(provider); |
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int y = 0; |
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for (int i = 0; i < pages; i++) { |
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RasterQuery q = RasterLocator.getManager().createQuery(); |
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q.setAreaOfInterest(new Rectangle((int)0, y, (int)provider.getWidth(), pageLines)); |
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q.setAllDrawableBands(); |
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pageBuffer = store.query(q); |
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//grf.getWindow(0, y, pageBuffer.getWidth(), pageBuffer.getHeight(), 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(AbstractRasterProvider grf, PageBandBuffer pageBuffer, int pageLines)throws IOException, ProcessInterruptedException { |
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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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RasterWriter grw = null;
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PageBandBuffer pageBuffer2 = new PageBandBuffer(grf.getDataType()[0], (int)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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DataServerWriter dataWriter1 = new WriterBufferCompleteServer(pageBuffer2);
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try {
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RasterWriter writer = DefaultRasterManager.getInstance().createWriter(inFileName + ".tif");
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Params params = writer.getParams(); |
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int newPosBlockSize = 7; |
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ParamImpl p = (ParamImpl)params.getParamById("blocksize");
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for (int j = 0; j < p.getList().length; j++) { |
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if (p.getList()[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 = DefaultRasterManager.getInstance().createWriter(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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*/
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private void save(DataOutputStream dos, Buffer pageBuffer) throws IOException { |
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switch (pageBuffer.getDataType()) {
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case Buffer.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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break;
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case Buffer.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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break;
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case Buffer.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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break;
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case Buffer.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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break;
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case Buffer.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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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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*/
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private void read(DataInputStream dis, PageBandBuffer pageBuffer) throws IOException { |
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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 Buffer.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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} |
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break;
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case Buffer.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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} |
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break;
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case Buffer.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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} |
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break;
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case Buffer.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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} |
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break;
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case Buffer.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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} |
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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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//TILEADO A BASE DE TIFF: Desechado porque es muy lento
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/*public void loadPage(int nPag, PageBuffer pageBuffer) {
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String fileName = tempDirectoryPath + File.separator + id + "-" + nPag + ".tif";
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File file = new File(id);
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if(!file.exists())
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return; //El trozo no ha sido volcado a disco por lo que no se carga.
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GeoRasterFile grf = GeoRasterFile.openFile(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.getName(), i, grf.getDataType());
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bandList.addBand(band, i);
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}catch(BandFoundInListException ex){
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//No a?adimos la banda
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}
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}
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grf.getWindowRaster(0, 0, grf.getWidth(), grf.getHeight(), bandList, pageBuffer);
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}*/
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/*public void savePage(int nPag, PageBuffer pageBuffer) throws IOException {
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createTempDirectory();
|
| 423 |
String fileName = tempDirectoryPath + File.separator + id + "-" + nPag + ".tif";
|
| 424 |
IDataWriter dataWriter = new WriterBufferServer(pageBuffer);
|
| 425 |
GeoRasterWriter grw = GeoRasterWriter.getWriter(dataWriter,
|
| 426 |
fileName,
|
| 427 |
pageBuffer.getHeight(), //Block size
|
| 428 |
pageBuffer.getBandCount(),
|
| 429 |
new Extent(0, 0, pageBuffer.getWidth() - 1, pageBuffer.getHeight() - 1),
|
| 430 |
0,
|
| 431 |
pageBuffer.getWidth(),
|
| 432 |
pageBuffer.getHeight(),
|
| 433 |
pageBuffer.getDataType());
|
| 434 |
grw.dataWrite();
|
| 435 |
grw.writeClose();
|
| 436 |
|
| 437 |
}*/
|
| 438 |
} |