Application: gvSIG desktop » gvSIG raster

package org.gvsig.fmap.dal.file.jimi;

import java.io.IOException;

import java.nio.Buffer;

import java.nio.ByteBuffer;

import java.nio.DoubleBuffer;

import java.nio.FloatBuffer;

import java.nio.IntBuffer;

import java.nio.ShortBuffer;

import org.gvsig.raster.lib.buffer.api.BandPageManager;

import org.gvsig.raster.lib.buffer.api.BufferLocator;

import org.gvsig.raster.lib.buffer.api.BufferManager;

/**

 * Band Page Managaer for a Memory Image

 * @author dmartinezizquierdo

 *

 */

public class MemoryImageBandPageManager implements BandPageManager{

    private MemoryImage image;

    private int band;

    private int dataSize = -1;

    private int dataType = BufferManager.TYPE_UNDEFINED;

    /**

     * @param image

     * @param band

     */

    public MemoryImageBandPageManager(MemoryImage image, int band){

        this.image=image;

        this.band=band;

    }

    @Override

    public boolean isSupportedSave() {

        return false;

    }

    @Override

    public void load(Buffer buffer, int firstRow, int numberRows, int dataType)

        throws IOException {

        int firstCell =  firstRow * image.columns;

        int lastCell = firstCell + numberRows*image.columns;

        byte[] bandBuffer = image.buffer[band];

        switch(dataType) {

            case BufferManager.TYPE_INT:

                for( int cell =firstCell ; cell<lastCell ; cell++ ) {

                    ((IntBuffer) buffer).put(cell, bandBuffer[cell]);

                }

                break;

            case BufferManager.TYPE_BYTE:

                for( int cell =firstCell ; cell<lastCell ; cell++ ) {

                    ((ByteBuffer) buffer).put(cell, bandBuffer[cell]);

                }

                break;

            case BufferManager.TYPE_DOUBLE:

                for( int cell =firstCell ; cell<lastCell ; cell++ ) {

                    ((DoubleBuffer) buffer).put(cell, bandBuffer[cell]);

                }

                break;

            case BufferManager.TYPE_FLOAT:

                for( int cell =firstCell ; cell<lastCell ; cell++ ) {

                    ((FloatBuffer) buffer).put(cell, bandBuffer[cell]);

                }

                break;

            case BufferManager.TYPE_SHORT:

            case BufferManager.TYPE_USHORT:

                for( int cell =firstCell ; cell<lastCell ; cell++ ) {

                    ((ShortBuffer) buffer).put(cell, bandBuffer[cell]);

                }

                break;

        }

    }

    @Override

    public void save(Buffer buffer, int row, int rows, int dataType)

        throws IOException {

        throw new UnsupportedOperationException();

    }

}