Application: gvSIG desktop » gvSIG raster

package org.gvsig.raster.lib.buffer.impl;

import java.util.Arrays;

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

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

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

import org.gvsig.raster.lib.buffer.api.Band.BandByte;

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

import org.gvsig.raster.lib.buffer.impl.exceptions.CopyFromBandException;

/**

 * @author fdiaz

 *

 */

public class DefaultBandByte extends AbstractBand implements BandByte {

    byte[] data;

    /**

     * @param rows

     * @param columns

     */

    public DefaultBandByte(int rows, int columns) {

        this(rows, columns, RasterLocator.getBufferManager().createNoData(null, null));

    }

    /**

     * @param rows

     * @param columns

     * @param noData

     */

    public DefaultBandByte(int rows, int columns, NoData noData) {

        this.rows = rows;

        this.columns = columns;

        data = new byte[rows * columns];

        this.noData = noData;

    }

    @Override

    public int getDataType() {

        return BufferManager.TYPE_BYTE;

    }

    @Override

    public Object get(int row, int column) {

        return getValue(row, column);

    }

    @Override

    public void set(int row, int column, Object value) {

        setValue(row, column, (byte) value);

    }

    @Override

    public void fill(Object value) {

        if (value == null) {

            if (getNoData().isDefined()) {

                value = getNoData().getValue();

            } else {

                // Do nothing, no data value is defined

                return;

            }

        }

        Arrays.fill(data, (byte) value);

    }

    byte[] getData() {

        return data;

    }

    @Override

    public void copyFrom(Band source) throws CopyFromBandException {

        if (this.getColumns() != source.getColumns() || this.getRows() != source.getRows()

            || !(source instanceof DefaultBandByte)) {

            throw new CopyFromBandException(source, this);

        }

        System.arraycopy(((DefaultBandByte) source).getData(), 0, this.data, 0, this.getRows()

            * this.getColumns());

    }

    @Override

    public byte getValue(int row, int column) {

        return data[row + column * getColumns()];

    }

    @Override

    public void setValue(int row, int column, byte value) {

        data[row + column * getColumns()] = value;

    }

    @Override

    public byte[] createRowBuffer() {

        return new byte[getColumns()];

    }

    @Override

    public void fetchRow(int row, Object rowBuffer) {

        System.arraycopy(data, row * getColumns(), (byte[]) rowBuffer, 0, getColumns());

    }

    @Override

    public void putRow(int row, Object rowBuffer) {

        System.arraycopy((byte[]) rowBuffer, 0, data, row * getColumns(), getColumns());

    }

}