/*
* #%L
* OME Bio-Formats package for reading and converting biological file formats.
* %%
* Copyright (C) 2005 - 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.formats.in;
import java.io.IOException;
import loci.common.RandomAccessInputStream;
import loci.formats.CoreMetadata;
import loci.formats.FormatException;
import loci.formats.FormatReader;
import loci.formats.FormatTools;
import loci.formats.MetadataTools;
import loci.formats.meta.MetadataStore;
import ome.xml.model.primitives.PositiveFloat;
import ome.units.quantity.Length;
/**
* BurleighReader is the file format reader for Burleigh .img files.
*/
public class BurleighReader extends FormatReader {
// -- Fields --
private int pixelsOffset;
// -- Constructor --
/** Constructs a new Burleigh reader. */
public BurleighReader() {
super("Burleigh", "img");
domains = new String[] {FormatTools.SEM_DOMAIN};
suffixSufficient = false;
suffixNecessary = false;
}
// -- IFormatReader API methods --
/* @see loci.formats.IFormatReader#isThisType(RandomAccessInputStream) */
@Override
public boolean isThisType(RandomAccessInputStream stream) throws IOException {
final int blockLen = 4;
if (!FormatTools.validStream(stream, blockLen, false)) return false;
byte[] magic = new byte[blockLen];
stream.read(magic);
return magic[0] == 0x66 && magic[1] == 0x66 && magic[3] == 0x40 &&
(magic[2] == 0x46 || magic[2] == 0x06);
}
/**
* @see loci.formats.IFormatReader#openBytes(int, byte[], int, int, int, int)
*/
@Override
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(pixelsOffset);
readPlane(in, x, y, w, h, buf);
return buf;
}
/* @see loci.formats.IFormatReader#close(boolean) */
@Override
public void close(boolean fileOnly) throws IOException {
super.close(fileOnly);
if (!fileOnly) {
pixelsOffset = 0;
}
}
// -- Internal FormatReader API methods --
/* @see loci.formats.FormatReader#initFile(String) */
@Override
protected void initFile(String id) throws FormatException, IOException {
super.initFile(id);
in = new RandomAccessInputStream(id);
CoreMetadata m = core.get(0);
m.littleEndian = true;
in.order(isLittleEndian());
int version = (int) in.readFloat() - 1;
m.sizeX = in.readShort();
m.sizeY = in.readShort();
double xSize = 0d, ySize = 0d, zSize = 0d;
pixelsOffset = version == 1 ? 8 : 260;
if (getMetadataOptions().getMetadataLevel() != MetadataLevel.MINIMUM) {
double timePerPixel = 0d;
int mode = 0, gain = 0, mag = 0;
double sampleVolts = 0d, tunnelCurrent = 0d;
if (version == 1) {
in.seek(in.length() - 40);
in.skipBytes(12);
xSize = in.readInt();
ySize = in.readInt();
zSize = in.readInt();
timePerPixel = in.readShort() * 50;
mag = in.readShort();
switch (mag) {
case 3:
mag = 10;
break;
case 4:
mag = 50;
break;
case 5:
mag = 250;
break;
}
xSize /= mag;
ySize /= mag;
zSize /= mag;
mode = in.readShort();
gain = in.readShort();
sampleVolts = in.readFloat() / 1000;
tunnelCurrent = in.readFloat();
}
else if (version == 2) {
in.skipBytes(14);
xSize = in.readInt();
ySize = in.readInt();
zSize = in.readInt();
mode = in.readShort();
in.skipBytes(4);
gain = in.readShort();
timePerPixel = in.readShort() * 50;
in.skipBytes(12);
sampleVolts = in.readFloat();
tunnelCurrent = in.readFloat();
addGlobalMeta("Force", in.readFloat());
}
addGlobalMeta("Version", version);
addGlobalMeta("Image mode", mode);
addGlobalMeta("Z gain", gain);
addGlobalMeta("Time per pixel (s)", timePerPixel);
addGlobalMeta("Sample volts", sampleVolts);
addGlobalMeta("Tunnel current", tunnelCurrent);
addGlobalMeta("Magnification", mag);
}
m.pixelType = FormatTools.UINT16;
m.sizeZ = 1;
m.sizeC = 1;
m.sizeT = 1;
m.imageCount = 1;
m.dimensionOrder = "XYZCT";
MetadataStore store = makeFilterMetadata();
MetadataTools.populatePixels(store, this);
if (getMetadataOptions().getMetadataLevel() != MetadataLevel.MINIMUM) {
Length sizeX = FormatTools.getPhysicalSizeX(xSize / getSizeX());
Length sizeY = FormatTools.getPhysicalSizeY(ySize / getSizeY());
Length sizeZ = FormatTools.getPhysicalSizeZ(zSize / getSizeZ());
if (sizeX != null) {
store.setPixelsPhysicalSizeX(sizeX, 0);
}
if (sizeY != null) {
store.setPixelsPhysicalSizeY(sizeY, 0);
}
if (sizeZ != null) {
store.setPixelsPhysicalSizeZ(sizeZ, 0);
}
}
}
}