//
// VolocityClippingReader.java
//
/*
OME Bio-Formats package for reading and converting biological file formats.
Copyright (C) 2005-@year@ UW-Madison LOCI and Glencoe Software, Inc.
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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package loci.formats.in;
import java.io.EOFException;
import java.io.IOException;
import loci.common.RandomAccessInputStream;
import loci.formats.FormatException;
import loci.formats.FormatReader;
import loci.formats.FormatTools;
import loci.formats.MetadataTools;
import loci.formats.codec.LZOCodec;
import loci.formats.meta.MetadataStore;
/**
* VolocityClippingReader is the file format reader for Volocity library
* clipping files.
*
* <dl><dt><b>Source code:</b></dt>
* <dd><a href="http://trac.openmicroscopy.org.uk/ome/browser/bioformats.git/components/bio-formats/src/loci/formats/in/VolocityClippingReader.java">Trac</a>,
* <a href="http://git.openmicroscopy.org/?p=bioformats.git;a=blob;f=components/bio-formats/src/loci/formats/in/VolocityClippingReader.java;hb=HEAD">Gitweb</a></dd></dl>
*/
public class VolocityClippingReader extends FormatReader {
// -- Constants --
private static final String CLIPPING_MAGIC_STRING = "FFCA";
private static final int AISF = 0x46534941;
// -- Fields --
private long pixelOffset;
// -- Constructor --
/** Constructs a new Volocity clipping reader. */
public VolocityClippingReader() {
super("Volocity Library Clipping", "acff");
domains = new String[] {FormatTools.UNKNOWN_DOMAIN};
}
// -- IFormatReader API methods --
/* @see loci.formats.IFormatReader#isThisType(RandomAccessInputStream) */
public boolean isThisType(RandomAccessInputStream stream) throws IOException {
return false;
}
/**
* @see loci.formats.IFormatReader#openBytes(int, byte[], int, int, int, int)
*/
public byte[] openBytes(int no, byte[] buf, int x, int y, int w, int h)
throws FormatException, IOException
{
FormatTools.checkPlaneParameters(this, no, buf.length, x, y, w, h);
in.seek(pixelOffset);
if (FormatTools.getPlaneSize(this) * 2 + in.getFilePointer() < in.length())
{
readPlane(in, x, y, w, h, buf);
return buf;
}
byte[] b = new LZOCodec().decompress(in, null);
RandomAccessInputStream s = new RandomAccessInputStream(b);
s.seek(0);
readPlane(s, x, y, w, h, buf);
s.close();
return buf;
}
/* @see loci.formats.IFormatReader#close(boolean) */
public void close(boolean fileOnly) throws IOException {
super.close(fileOnly);
if (!fileOnly) {
pixelOffset = 0;
}
}
// -- Internal FormatReader API methods --
/* @see loci.formats.FormatReader#initFile(String) */
protected void initFile(String id) throws FormatException, IOException {
super.initFile(id);
in = new RandomAccessInputStream(id);
core[0].littleEndian = in.read() == 'I';
in.order(isLittleEndian());
in.skipBytes(4);
String magicString = in.readString(4);
if (!magicString.equals(CLIPPING_MAGIC_STRING)) {
throw new FormatException("Found invalid magic string: " + magicString);
}
int check = in.readInt();
while (check != 0x208 && check != AISF) {
in.seek(in.getFilePointer() - 3);
check = in.readInt();
}
if (check == AISF) {
core[0].littleEndian = false;
in.order(isLittleEndian());
in.skipBytes(28);
}
core[0].sizeX = in.readInt();
core[0].sizeY = in.readInt();
core[0].sizeZ = in.readInt();
core[0].sizeC = 1;
core[0].sizeT = 1;
core[0].imageCount = getSizeZ() * getSizeT();
core[0].dimensionOrder = "XYCZT";
core[0].pixelType = FormatTools.UINT8;
pixelOffset = in.getFilePointer() + 65;
if (getSizeX() * getSizeY() * 100 >= in.length()) {
while (in.getFilePointer() < in.length()) {
try {
byte[] b = new LZOCodec().decompress(in, null);
if (b.length > 0 && (b.length % (getSizeX() * getSizeY())) == 0) {
int bytes = b.length / (getSizeX() * getSizeY());
core[0].pixelType =
FormatTools.pixelTypeFromBytes(bytes, false, false);
break;
}
}
catch (EOFException e) { }
pixelOffset++;
in.seek(pixelOffset);
}
}
MetadataStore store = makeFilterMetadata();
MetadataTools.populatePixels(store, this);
// populate Image data
MetadataTools.setDefaultCreationDate(store, id, 0);
}
}