/*
* #%L
* Bio-Formats Plugins for ImageJ: a collection of ImageJ plugins including the
* Bio-Formats Importer, Bio-Formats Exporter, Bio-Formats Macro Extensions,
* Data Browser and Stack Slicer.
* %%
* Copyright (C) 2006 - 2015 Open Microscopy Environment:
* - Board of Regents of the University of Wisconsin-Madison
* - Glencoe Software, Inc.
* - University of Dundee
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/gpl-2.0.html>.
* #L%
*/
package loci.plugins.util;
import ij.process.ImageProcessor;
import java.io.IOException;
import loci.formats.FormatException;
import loci.formats.IFormatReader;
import loci.formats.cache.CacheException;
import loci.formats.cache.ICacheSource;
/**
* Retrieves ImageJ image processors from an image reader.
*/
public class ImageProcessorSource implements ICacheSource {
// -- Fields --
/** Image reader from which to draw ImageProcessors. */
protected ImageProcessorReader reader;
// -- Constructors --
public ImageProcessorSource(IFormatReader reader) {
if (reader instanceof ImageProcessorReader) {
this.reader = (ImageProcessorReader) reader;
}
else {
this.reader = new ImageProcessorReader(reader);
}
}
// -- ICacheSource API methods --
/* @see loci.formats.cache.ICacheSource#getObject(int) */
@Override
public int getObjectCount() { return reader.getImageCount(); }
/* @see loci.formats.cache.ICacheSource#getObject(int) */
@Override
public Object getObject(int index) throws CacheException {
// assumes that channels are separated
ImageProcessor ip = null;
try {
ip = reader.openProcessors(index)[0];
}
catch (FormatException exc) {
throw new CacheException(exc);
}
catch (IOException exc) {
throw new CacheException(exc);
}
return ip;
}
}