svn-gvsig-desktop / branches / org.gvsig.desktop-2018a / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.file / org.gvsig.fmap.dal.file.bsq / src / main / java / org / gvsig / fmap / dal / file / bsq / BSQFileSystemServerProvider.java @ 43876
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/* gvSIG. Desktop Geographic Information System.
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*
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* Copyright ? 2007-2016 gvSIG Association
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.fmap.dal.file.bsq; |
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import java.io.DataOutputStream; |
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import java.io.File; |
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import java.io.FileOutputStream; |
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import java.io.IOException; |
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import java.nio.ByteOrder; |
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import org.apache.commons.io.FilenameUtils; |
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import org.apache.commons.io.IOUtils; |
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import org.gvsig.basicformats.FormatsFile; |
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import org.gvsig.basicformats.HDRFile; |
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import org.gvsig.fmap.dal.DataServerExplorer; |
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import org.gvsig.fmap.dal.NewDataStoreParameters; |
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import org.gvsig.fmap.dal.exception.CreateException; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.raster.NewRasterStoreParameters; |
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import org.gvsig.fmap.dal.serverexplorer.filesystem.FilesystemStoreParameters; |
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import org.gvsig.fmap.dal.serverexplorer.filesystem.impl.AbstractFilesystemServerExplorerProvider; |
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import org.gvsig.raster.lib.buffer.api.Band; |
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import org.gvsig.raster.lib.buffer.api.Buffer; |
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import org.gvsig.raster.lib.buffer.api.BufferDimensions; |
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import org.gvsig.raster.lib.buffer.api.BufferManager; |
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public class BSQFileSystemServerProvider extends AbstractFilesystemServerExplorerProvider { |
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protected String[] fileExtensions; |
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public BSQFileSystemServerProvider(
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String name,
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String description,
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String[] fileExtensions |
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) { |
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super(name, description);
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this.fileExtensions = fileExtensions;
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} |
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@Override
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public boolean canCreate() { |
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return true; |
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} |
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@Override
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public NewDataStoreParameters getCreateParameters() throws DataException { |
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throw new UnsupportedOperationException(); |
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} |
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@Override
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public void create(NewDataStoreParameters parameters, boolean overwrite) throws CreateException { |
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FileOutputStream fos = null; |
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try {
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Buffer buffer = ((NewRasterStoreParameters) parameters).getBuffer();
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if (!buffer.areAllBandsOfTheSameType()) {
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throw new IllegalArgumentException("The BSQ format does not support bands of different types."); |
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} |
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BufferDimensions dimensions = buffer.getDimensions(); |
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File file = ((FilesystemStoreParameters) parameters).getFile();
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fos = new FileOutputStream(file); |
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DataOutputStream dos = new DataOutputStream(fos); |
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HDRFile hdr = FormatsFile.createHDRFile(); |
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hdr.setDataType(buffer.getBandTypes()[0]);
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hdr.setNBands(buffer.getBandCount()); |
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hdr.setByteOrder(ByteOrder.nativeOrder());
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hdr.setDimensions( |
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dimensions.getRows(), |
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dimensions.getColumns(), |
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dimensions.getEnvelope() |
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); |
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for (int nband = 0; nband < buffer.getBandCount(); nband++) { |
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writeBand(dos, buffer.getBand(nband)); |
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} |
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hdr.write(file); |
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} catch (Exception ex) { |
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throw new CreateException(this.getName(), ex); |
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} finally {
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IOUtils.closeQuietly(fos); |
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} |
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} |
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void writeBand(DataOutputStream dos, Band band) throws IOException { |
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int dataType = band.getDataType();
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Object rowBuffer = band.createRowBuffer();
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for (int row = 0; row < band.getRows(); row++) { |
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band.fetchRow(row, rowBuffer); |
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switch (dataType) {
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case BufferManager.TYPE_BYTE:
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byte[] byteBuffer = (byte[]) rowBuffer; |
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for (int n = 0; n < byteBuffer.length; n++) { |
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dos.writeByte(byteBuffer[n]); |
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} |
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break;
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case BufferManager.TYPE_SHORT:
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case BufferManager.TYPE_USHORT:
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short[] shortBuffer = (short[]) rowBuffer; |
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for (int n = 0; n < shortBuffer.length; n++) { |
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dos.writeShort(shortBuffer[n]); |
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} |
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break;
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case BufferManager.TYPE_INT:
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int[] intBuffer = (int[]) rowBuffer; |
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for (int n = 0; n < intBuffer.length; n++) { |
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dos.writeInt(intBuffer[n]); |
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} |
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break;
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case BufferManager.TYPE_FLOAT:
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float[] floatBuffer = (float[]) rowBuffer; |
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for (int n = 0; n < floatBuffer.length; n++) { |
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dos.writeFloat(floatBuffer[n]); |
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} |
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break;
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case BufferManager.TYPE_DOUBLE:
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double[] doubleBuffer = (double[]) rowBuffer; |
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for (int n = 0; n < doubleBuffer.length; n++) { |
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dos.writeDouble(doubleBuffer[n]); |
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} |
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break;
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default:
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throw new IllegalArgumentException("Data Type " + dataType + " not supported."); |
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} |
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} |
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} |
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@Override
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public int getMode() { |
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return DataServerExplorer.MODE_RASTER;
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} |
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@Override
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public boolean accept(File pathname) { |
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return FilenameUtils.isExtension(pathname.getName().toLowerCase(), this.fileExtensions); |
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} |
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} |