gvsig-raster / org.gvsig.raster.cache / trunk / org.gvsig.raster.cache / org.gvsig.raster.cache.lib.impl / src / main / java / org / gvsig / raster / cache / buffer / impl / io / BufferDataSourceImpl.java @ 991
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package org.gvsig.raster.cache.buffer.impl.io; |
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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.jgdal.GdalException; |
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import org.gvsig.raster.cache.buffer.Band; |
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import org.gvsig.raster.cache.buffer.BufferDataSource; |
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import org.gvsig.raster.cache.buffer.Buffer; |
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import org.gvsig.raster.cache.buffer.PxTile; |
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import org.gvsig.raster.cache.buffer.exception.OperationNotSupportedException; |
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import org.gvsig.raster.cache.buffer.impl.PxTileImpl; |
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import org.gvsig.raster.cache.buffer.impl.RasterBase; |
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/**
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* Data Server for read only buffers. This server only read tiff data.
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*
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* 02/11/2008
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* @author Nacho Brodin nachobrodin@gmail.com
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*/
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public class BufferDataSourceImpl extends RasterBase implements BufferDataSource { |
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private GdalRead reader = null; |
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private String path = null; |
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private PxTile window = null; |
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private int selectedBand = -1; |
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/**
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* This constructor is useful to use this class with a image reference.
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* Typically ReadOnlyCache
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* @param path
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* Path to the file
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* @throws IOException
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*/
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public BufferDataSourceImpl(String path) throws IOException { |
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super(0, 0, 0, 0); //Se asignan los par?metros despues de construir el tiff |
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this.path = path;
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try {
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reader = new GdalRead(path);
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} catch (GdalException e) {
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throw new IOException(); |
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} |
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super.setWidth(reader.getWidth());
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super.setHeight(reader.getHeight());
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super.setDataType(reader.getDataType());
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super.setBandCount(reader.getBandCount());
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window = new PxTileImpl(0, 0, reader.getWidth(), reader.getHeight()); |
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} |
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/**
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* This constructor is useful to use this class with a image reference
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* .Typically ReadOnlyCache.
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* @param path
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* Path to the file
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* @throws IOException
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*/
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public BufferDataSourceImpl(String path, PxTileImpl window) throws IOException { |
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super(window.getX(), window.getY(), 0, 0); //Se asignan los par?metros despues de construir el tiff |
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this.path = path;
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this.window = window;
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try {
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reader = new GdalRead(path);
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} catch (GdalException e) {
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throw new IOException(); |
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} |
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super.setWidth(window.getWidth());
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super.setHeight(window.getHeight());
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super.setDataType(reader.getRasterBufTypeFromGdalType(reader.getDataType()));
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super.setBandCount(reader.getBandCount());
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} |
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/*
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* (non-Javadoc)
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* @see org.cachete.buffer.IBufferDataSource#close()
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*/
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public void close() throws IOException { |
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if(reader != null) |
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try {
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reader.close(); |
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reader = null;
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} catch (GdalException e) {
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throw new IOException(); |
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} |
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} |
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/**
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* This constructor is useful to use this class without a image reference.
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* Typically StripeCache
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* @throws IOException
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*/
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public BufferDataSourceImpl() {
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super(0, 0, 0, 0); |
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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 path;
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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#setPath(java.lang.String)
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*/
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public void setPath(String path) { |
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this.path = path;
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} |
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/*
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* (non-Javadoc)
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* @see org.fv.raster.buffer.rocache.ICacheDataSource#getBand()
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*/
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public int getSelectedBand() { |
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return this.selectedBand; |
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} |
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/*
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* (non-Javadoc)
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* @see org.fv.raster.buffer.rocache.ICacheDataSource#setBand(java.lang.String)
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*/
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public void setSelectedBand(int selectedBand) { |
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this.selectedBand = selectedBand;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.rocache.ICacheDataSource#loadSelectedBand(org.gvsig.raster.buffer.IRasterBuffer, org.gvsig.raster.buffer.rocache.ReadOnlyStripe)
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*/
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public void loadSelectedBand(Buffer rb, PxTile stripe) throws IOException, InterruptedException, OperationNotSupportedException { |
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loadPage(rb, stripe, selectedBand); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.rocache.ICacheDataSource#loadPage(org.gvsig.raster.buffer.IRasterBuffer, org.gvsig.raster.buffer.rocache.ReadOnlyStripe)
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*/
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public void loadPage(Buffer rb, PxTile stripe) throws IOException, InterruptedException, OperationNotSupportedException { |
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try {
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Object dataObj = reader.readBlock((int)stripe.getX() + window.getX(), (int)stripe.getY() + window.getY(), (int)stripe.getWidth(), (int)stripe.getHeight()); |
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if (reader.getDataType() == GdalRead.GDT_Byte) {
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byte[][][] buf = (byte[][][])dataObj; |
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for (int iBand = 0; iBand < buf.length; iBand++) |
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for (int iLine = 0; iLine < buf[iBand].length; iLine++) |
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for (int iColumn = 0; iColumn < buf[iBand][iLine].length; iColumn++) |
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rb.setElem(iLine, iColumn, iBand, buf[iBand][iLine][iColumn]); |
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} else if (reader.getDataType() == GdalRead.GDT_CInt16 || reader.getDataType() == GdalRead.GDT_Int16 || reader.getDataType() == GdalRead.GDT_UInt16) { |
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short[][][] buf = (short[][][])dataObj; |
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for (int iBand = 0; iBand < buf.length; iBand++) |
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for (int iLine = 0; iLine < buf[iBand].length; iLine++) |
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for (int iColumn = 0; iColumn < buf[iBand][iLine].length; iColumn++) |
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rb.setElem(iLine, iColumn, iBand, buf[iBand][iLine][iColumn]); |
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} else if (reader.getDataType() == GdalRead.GDT_CInt32 || reader.getDataType() == GdalRead.GDT_Int32 || reader.getDataType() == GdalRead.GDT_UInt32) { |
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int[][][] buf = (int[][][])dataObj; |
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for (int iBand = 0; iBand < buf.length; iBand++) |
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for (int iLine = 0; iLine < buf[iBand].length; iLine++) |
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for (int iColumn = 0; iColumn < buf[iBand][iLine].length; iColumn++) |
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rb.setElem(iLine, iColumn, iBand, buf[iBand][iLine][iColumn]); |
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} else if(reader.getDataType() == GdalRead.GDT_Float32 || reader.getDataType() == GdalRead.GDT_CFloat32) { |
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float[][][] buf = (float[][][])dataObj; |
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for (int iBand = 0; iBand < buf.length; iBand++) |
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for (int iLine = 0; iLine < buf[iBand].length; iLine++) |
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for (int iColumn = 0; iColumn < buf[iBand][iLine].length; iColumn++) |
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rb.setElem(iLine, iColumn, iBand, buf[iBand][iLine][iColumn]); |
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} else if(reader.getDataType() == GdalRead.GDT_Float64 || reader.getDataType() == GdalRead.GDT_CFloat64) { |
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double[][][] buf = (double[][][])dataObj; |
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for (int iBand = 0; iBand < buf.length; iBand++) |
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for (int iLine = 0; iLine < buf[iBand].length; iLine++) |
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for (int iColumn = 0; iColumn < buf[iBand][iLine].length; iColumn++) |
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rb.setElem(iLine, iColumn, iBand, buf[iBand][iLine][iColumn]); |
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} |
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} catch (GdalException e) {
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throw new IOException("Error reading block."); |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.fv.raster.buffer.rocache.ICacheDataSource#loadPage(org.fv.raster.buffer.IRasterBuffer, org.fv.raster.buffer.rocache.ReadOnlyStripe, int)
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*/
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public void loadPage(Buffer rb, PxTile stripe, int iBand) throws IOException, InterruptedException, OperationNotSupportedException { |
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if(rb.getBandCount() != 1) |
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throw new IOException("Wrong buffer"); |
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try {
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Object dataObj = reader.readBlock((int)stripe.getX() + window.getX(), (int)stripe.getY() + window.getY(), (int)stripe.getWidth(), (int)stripe.getHeight(), iBand); |
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if (reader.getDataType() == GdalRead.GDT_Byte) {
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byte[][] buf = (byte[][])dataObj; |
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for (int iLine = 0; iLine < buf.length; iLine++) |
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for (int iColumn = 0; iColumn < buf[iLine].length; iColumn++) |
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rb.setElem(iLine, iColumn, 0, buf[iLine][iColumn]);
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} else if (reader.getDataType() == GdalRead.GDT_CInt16 || reader.getDataType() == GdalRead.GDT_Int16 || reader.getDataType() == GdalRead.GDT_UInt16) { |
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short[][] buf = (short[][])dataObj; |
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for (int iLine = 0; iLine < buf.length; iLine++) |
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for (int iColumn = 0; iColumn < buf[iLine].length; iColumn++) |
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rb.setElem(iLine, iColumn, 0, buf[iLine][iColumn]);
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} else if (reader.getDataType() == GdalRead.GDT_CInt32 || reader.getDataType() == GdalRead.GDT_Int32 || reader.getDataType() == GdalRead.GDT_UInt32) { |
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int[][] buf = (int[][])dataObj; |
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for (int iLine = 0; iLine < buf.length; iLine++) |
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for (int iColumn = 0; iColumn < buf[iLine].length; iColumn++) |
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rb.setElem(iLine, iColumn, 0, buf[iLine][iColumn]);
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} else if(reader.getDataType() == GdalRead.GDT_Float32 || reader.getDataType() == GdalRead.GDT_CFloat32) { |
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float[][] buf = (float[][])dataObj; |
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for (int iLine = 0; iLine < buf.length; iLine++) |
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for (int iColumn = 0; iColumn < buf[iLine].length; iColumn++) |
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rb.setElem(iLine, iColumn, iBand, buf[iLine][iColumn]); |
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} else if(reader.getDataType() == GdalRead.GDT_Float64 || reader.getDataType() == GdalRead.GDT_CFloat64) { |
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double[][] buf = (double[][])dataObj; |
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for (int iLine = 0; iLine < buf.length; iLine++) |
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for (int iColumn = 0; iColumn < buf[iLine].length; iColumn++) |
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rb.setElem(iLine, iColumn, 0, buf[iLine][iColumn]);
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} |
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} catch (GdalException e) {
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throw new IOException("Error reading block."); |
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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#loadPage(int, org.gvsig.fmap.dataaccess.cache.PageBuffer)
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*/
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public void loadPage(Buffer buf, String inFileName) { |
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for (int i = 0; i < buf.getBandCount(); i++) |
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loadBand(buf.getBand(i), inFileName + i); |
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} |
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/**
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* Load a band from hard disk
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* @param pageBuffer
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* @param inFileName
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*/
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public void loadBand(Band pageBuffer, String inFileName) { |
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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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try {
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FileInputStream fis = new FileInputStream(file); |
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BufferedInputStream bis = new BufferedInputStream(fis); |
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DataInputStream dis = new DataInputStream(bis); |
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read(dis, pageBuffer); |
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fis.close(); |
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bis.close(); |
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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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} catch (OperationNotSupportedException ex) { |
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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(Buffer buf, String fileName) throws IOException { |
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for (int i = 0; i < buf.getBandCount(); i++) |
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saveBand(buf.getBand(i), fileName + i); |
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} |
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/**
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* Save a band to hard disk
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* @param pageBuffer
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* @param fileName
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* @throws IOException
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*/
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public void saveBand(Band pageBuffer, String fileName) throws IOException { |
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File f = new File(fileName); |
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FileOutputStream fos = new FileOutputStream(f); |
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BufferedOutputStream bos = new BufferedOutputStream(fos); |
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DataOutputStream dos = new DataOutputStream(bos); |
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save(dos, pageBuffer); |
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dos.close(); |
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bos.close(); |
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fos.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(String fileName) { |
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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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* 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, Band pageBuffer) throws IOException { |
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switch (pageBuffer.getDataType()) {
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case Buffer.TYPE_BYTE: |
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try {
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for (int line = 0; line < pageBuffer.getHeight(); line++) |
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dos.write(pageBuffer.getByteLine(line)); |
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} catch (OperationNotSupportedException e) { |
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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)); |
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} |
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break;
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case Buffer.TYPE_SHORT: |
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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)); |
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break;
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case Buffer.TYPE_INT: |
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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)); |
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break;
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case Buffer.TYPE_FLOAT: |
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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)); |
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break;
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case Buffer.TYPE_DOUBLE: |
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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)); |
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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 OperationNotSupportedException
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*/
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private void read(DataInputStream dis, Band pageBuffer) throws IOException, OperationNotSupportedException { |
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int w = pageBuffer.getWidth();
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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()]; |
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dis.readFully(b); |
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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[(line * w) + d]; |
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pageBuffer.setByteLine(linea, line); |
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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()]; |
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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 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[(line * w) + x]; |
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pageBuffer.setShortLine(linea, line); |
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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()]; |
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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 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[(line * w) + x]; |
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pageBuffer.setIntLine(linea, line); |
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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()]; |
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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 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[(line * w) + x]; |
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pageBuffer.setFloatLine(linea, line); |
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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()]; |
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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 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[(line * w) + x]; |
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pageBuffer.setDoubleLine(linea, line); |
| 425 |
} |
| 426 |
break;
|
| 427 |
} |
| 428 |
} |
| 429 |
|
| 430 |
/*
|
| 431 |
* (non-Javadoc)
|
| 432 |
* @see org.gvsig.raster.buffer.stripecache.ICacheDataSource#changeFileName(java.lang.String, java.lang.String)
|
| 433 |
*/
|
| 434 |
public void changeFileName(String oldName, String newName) { |
| 435 |
File f1 = new File(oldName); |
| 436 |
f1.renameTo(new File(newName)); |
| 437 |
} |
| 438 |
|
| 439 |
/*
|
| 440 |
* (non-Javadoc)
|
| 441 |
* @see java.lang.Object#clone()
|
| 442 |
*/
|
| 443 |
public BufferDataSource clone() {
|
| 444 |
try {
|
| 445 |
BufferDataSourceImpl result = new BufferDataSourceImpl(path, (PxTileImpl)window);
|
| 446 |
result.selectedBand = selectedBand; |
| 447 |
return result;
|
| 448 |
} catch (IOException e) { |
| 449 |
return null; |
| 450 |
} |
| 451 |
} |
| 452 |
} |