Application: gvSIG desktop » gvSIG raster

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

import java.io.IOException;

import org.gvsig.raster.cache.buffer.Buffer;

import org.gvsig.raster.cache.buffer.BufferDataSource;

import org.gvsig.raster.cache.buffer.BufferParam;

import org.gvsig.raster.cache.buffer.impl.io.BufferDataSourceImpl;

import org.gvsig.raster.cache.buffer.impl.io.BufferMultiDataSourceImpl;

/**

 * Buffer parameters. This class contains generic parameters. 

 * Basic information to fill: x, y, w, h, datatype and bandcount. If

 * the buffer is RasterReadOnlyBuffer is necessary a IBufferDataSource too.

 * 02/11/2008

 * @author Nacho Brodin nachobrodin@gmail.com

 */

public class BufferParamImpl extends PxTileImpl implements BufferParam {

        private static final long serialVersionUID = 1L;

        private int               accessType       = Buffer.READ_WRITE;

        private int[]             bands            = null;

        /**

         * Constructor

         * @param  w

         *         Width

         * @param  h

         *         Height

         */

        public BufferParamImpl(int w, int h) {

                super(0, 0, w, h);

        }

        /**

         * Constructor

         * @param  file

         *         file name

         * @param  x

         *         X position

         * @param  y

         *         Y position

         * @param  w

         *         Width

         * @param  h

         *         Height

         * @param  bands

         *         bands to load in the buffer

         * @throws IOException 

         */

        public BufferParamImpl(String file, int x, int y, int w, int h, int[] bands) throws IOException {

                super(x, y, w, h);

                PxTileImpl pxTile = new PxTileImpl(x, y, w, h);

                BufferDataSourceImpl datasource = new BufferDataSourceImpl(file, pxTile);

                setDataSource(datasource);

                if(bands == null) {

                        int bandCount = getDataSource().getBandCount();

                        this.bands = new int[bandCount];

                        for (int i = 0; i < bandCount; i++) {

                                this.bands[i] = i;

                        }

                } else

                        this.bands = bands;

                setBandCount(this.bands.length);

                accessType = Buffer.READ_ONLY;

        }

        /**

         * Constructor for multifiles

         * @param  file

         *         file name

         * @param  x

         *         X position

         * @param  y

         *         Y position

         * @param  w

         *         Width in pixels

         * @param  h

         *         Height in pixels

         * @param  bands

         *         bands to load in the buffer. It can be null. In this case all bands will be used

         * @throws IOException 

         */

        public BufferParamImpl(String[] file, int x, int y, int w, int h, int[] bands) throws IOException {

                super(x, y, w, h);

                PxTileImpl pxTile = new PxTileImpl(x, y, w, h);

                BufferDataSource datasource = new BufferMultiDataSourceImpl(file, pxTile);

                setDataSource(datasource);

                if(bands == null) {

                        int bandCount = getDataSource().getBandCount();

                        this.bands = new int[bandCount];

                        for (int i = 0; i < bandCount; i++) {

                                this.bands[i] = i;

                        }

                } else

                        this.bands = bands;

                setBandCount(this.bands.length);

                accessType = Buffer.READ_ONLY;

        }

        /**

         * Creates a parameter object for building a buffer. The buffer type is read-write.

         * This type could be changed after the creation of a {@link BufferParam} object.

         * @param  w

         *         Width

         * @param  h

         *         Height

         * @param  bandCount

         *                    Number of bands

         * @param  dataType

         *         Type of data        

         */

        public BufferParamImpl(int w, int h, int bandCount, int dataType) {

                super(0, 0, w, h);

                this.setBandCount(bandCount);

                this.setDataType(dataType);

                this.setAccessType(Buffer.READ_WRITE);

        }

        /*

         * 

         * (non-Javadoc)

         * @see org.gvsig.raster.cache.buffer.BufferParam#setAccessType(int)

         */

        public void setAccessType(int accessType) {

                this.accessType = accessType;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.cache.buffer.BufferParam#getAccessType()

         */

        public int getAccessType() {

                return accessType;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.cache.buffer.BufferParam#setFile(java.lang.String)

         */

        public void setBandList(int[] bands) {

                this.bands = bands;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.cache.buffer.BufferParam#getFile()

         */

        public int[] getBandList() {

                return bands;

        }

}