gvsig-raster / org.gvsig.raster.cache / trunk / org.gvsig.raster.cache / org.gvsig.raster.cache.lib.impl / deprecated / buffer / impl / rocache / ReadOnlyCacheBand.java @ 1939
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package org.gvsig.raster.cache.buffer.impl.rocache; |
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import java.io.IOException; |
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import java.util.ArrayList; |
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import org.gvsig.raster.cache.buffer.Buffer; |
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import org.gvsig.raster.cache.buffer.BufferDataSource; |
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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.exception.ProcessInterruptedException; |
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import org.gvsig.raster.cache.buffer.impl.BandImpl; |
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import org.gvsig.raster.cache.buffer.impl.memory.RasterMemoryBuffer; |
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/**
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* Base class for a ReadOnlyCacheBand
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public abstract class ReadOnlyCacheBand extends BandImpl { |
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/**
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* Loaded page
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*/
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protected Buffer page = null; |
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protected Buffer secondPage = null; |
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protected BufferDataSource dataSource = null; |
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protected ArrayList<PxTile> stripeList = null; |
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/**
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* Band number in the list of the raster
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*/
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protected int nBand = -1; |
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/**
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* Number of page loaded in IBuffer
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*/
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protected int loadedPage = -1; |
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protected int loadedSecondPage = -1; |
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protected int bitsPag = 0; |
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/**
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* Para extraer el desplazamiento de una direcci?n (l?nea de raster) hay que hacer una operaci?n And con
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* con la altura de la p?gina -1. Por ejemplo, una p?gina de 16 l?neas de altura el desplazamiento ser?
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* 16 - 1 = 15 porque 15 en binario es 1111.
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*
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* Si queremos acceder a la linea del raster n?mero 83 (1010011) realizando la operaci?n And con el valor del
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* desplazamiento obtenemos (0001111 & 1010011 = 0000011), es decir el valor 3 en decimal. Esto quiere decir
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* que la l?nea 83 del raster es la 3 de su p?gina.
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*/
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protected int offset = 1; |
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/**
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* Constructor a llamar desde las clases hijas
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*/
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public ReadOnlyCacheBand(ArrayList<PxTile> stripeList, |
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BufferDataSource dataSource, |
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int offset,
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int bitsPag,
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int nBand,
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int width,
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int height,
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int dataType) {
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super(width, height);
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super.setDataType(dataType);
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this.nBand = nBand;
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this.dataSource = dataSource;
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this.stripeList = stripeList;
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this.offset = offset;
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this.bitsPag = bitsPag;
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//Creamos las p?ginas en memoria
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this.page = new RasterMemoryBuffer(getDataType(), |
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width, |
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getBlockSize(), |
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1,
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true);
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this.secondPage = new RasterMemoryBuffer(getDataType(), |
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width, |
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getBlockSize(), |
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1,
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true);
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} |
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/**
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* Load a page with data from disk
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* @param nPage
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*/
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protected void loadOrSwapPage(int nPage) { |
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if(loadedSecondPage == nPage) {
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swapPages(); |
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return;
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} |
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loadPage(nPage); |
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} |
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/**
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* Swap the two pages
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*/
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protected void loadPage(int nPage) { |
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try {
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if(dataSource != null) { |
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dataSource.loadPage(page, stripeList.get(nPage), nBand); |
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dataSource.loadPage(secondPage, stripeList.get((nPage + 1) % stripeList.size()), nBand);
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} |
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loadedPage = nPage; |
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loadedSecondPage = (nPage + 1) % stripeList.size();
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//System.out.println("Load:" + loadedPage + " " + loadedSecondPage);
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} catch (OperationNotSupportedException e) { |
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} catch (IOException e) { |
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} catch (ProcessInterruptedException e) {
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} |
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} |
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/**
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* Swap the two pages
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*/
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protected void swapPages() { |
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int aux = loadedPage;
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loadedPage = loadedSecondPage; |
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loadedSecondPage = aux; |
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Buffer pAux = page;
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page = secondPage; |
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secondPage = pAux; |
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//System.out.println("Swap:" + loadedPage + " " + loadedSecondPage);
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getBlockHeight()
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*/
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public int getBlockSize() { |
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return (int)stripeList.get(0).getHeight(); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getNumberOfBlocks()
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*/
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public int getNumberOfBlocks() { |
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return stripeList.size();
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setBandNumber(int)
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*/
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public void setBandNumber(int band) { |
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this.nBand = band;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getBandNumber()
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*/
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public int getBandNumber() { |
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return this.nBand; |
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} |
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//***********************************************
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//Getting a block of data
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getByteBlock(int)
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*/
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public byte[][] getByteBlock(int block){ |
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getShortBlock(int)
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*/
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public short[][] getShortBlock(int block) { |
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getIntBlock(int)
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*/
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public int[][] getIntBlock(int block) { |
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getFloatBlock(int)
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*/
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public float[][] getFloatBlock(int block) { |
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getDoubleBlock(int)
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*/
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public double[][] getDoubleBlock(int block) { |
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return null; |
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} |
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//*****************************************************
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getElemByte(int, int)
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*/
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public byte getElemByte(int line, int col) { |
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return 0; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getElemDouble(int, int)
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*/
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public double getElemDouble(int line, int col) { |
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return 0; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getElemFloat(int, int)
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*/
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public float getElemFloat(int line, int col) { |
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return 0; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getElemInt(int, int)
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*/
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public int getElemInt(int line, int col) { |
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return 0; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getElemShort(int, int)
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*/
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public short getElemShort(int line, int col) { |
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return 0; |
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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.buffer.IRasterBand#getByteLine(int)
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*/
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public byte[] getByteLine(int line) throws OperationNotSupportedException { |
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getDoubleLine(int)
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*/
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public double[] getDoubleLine(int line) throws OperationNotSupportedException { |
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getFloatLine(int)
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*/
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public float[] getFloatLine(int line) throws OperationNotSupportedException { |
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getIntLine(int)
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*/
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public int[] getIntLine(int line) throws OperationNotSupportedException { |
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#getShortLine(int)
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*/
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public short[] getShortLine(int line) throws OperationNotSupportedException { |
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setElem(int, int, byte)
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*/
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public void setElem(int line, int col, byte data) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setElem(int, int, short)
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*/
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public void setElem(int line, int col, short data) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setElem(int, int, int)
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*/
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public void setElem(int line, int col, int data) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setElem(int, int, float)
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*/
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public void setElem(int line, int col, float data) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setElem(int, int, double)
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*/
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public void setElem(int line, int col, double data) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setByteLine(byte[], int)
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*/
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public void setByteLine(byte[] data, int line) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setDoubleLine(double[], int)
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*/
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public void setDoubleLine(double[] data, int line) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setFloatLine(float[], int)
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*/
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public void setFloatLine(float[] data, int line) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setIntLine(int[], int)
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*/
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public void setIntLine(int[] data, int line) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setShortLine(short[], int)
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*/
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public void setShortLine(short[] data, int line) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setByteBlock(byte[][], int)
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*/
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public void setByteBlock(byte[][] data, int block) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setShortBlock(short[][], int)
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*/
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public void setShortBlock(short[][] data, int block) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setIntBlock(int[][], int)
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*/
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public void setIntBlock(int[][] data, int block) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setFloatBlock(float[][], int)
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*/
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public void setFloatBlock(float[][] data, int block) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.buffer.IRasterBand#setDoubleBlock(double[][], int)
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*/
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public void setDoubleBlock(double[][] data, int block) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.fv.raster.buffer.IBand#assign(byte)
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*/
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public void assign(byte value) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.fv.raster.buffer.IBand#assign(short)
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*/
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public void assign(short value) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.fv.raster.buffer.IBand#assign(int)
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*/
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public void assign(int value) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.fv.raster.buffer.IBand#assign(float)
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*/
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public void assign(float value) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.fv.raster.buffer.IBand#assign(double)
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*/
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public void assign(double value) throws OperationNotSupportedException { |
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throw new OperationNotSupportedException("ReadOnlyCacheBand doesn't support this operation"); |
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} |
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} |