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Merge pull request #1245 from imunro/develop-PQBin
Add reader for PicoQuant .bin files.
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components/formats-gpl/src/loci/formats/in/PQBinReader.java
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/* | ||
* #%L | ||
* OME Bio-Formats package for reading and converting biological file formats. | ||
* %% | ||
* Copyright (C) 2005 - 2014 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% | ||
*/ | ||
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package loci.formats.in; | ||
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import java.io.IOException; | ||
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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; | ||
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/** | ||
* PQBinReader is the file format reader for PicoQuant .bin 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/PQBinReader.java">Trac</a>, | ||
* <a href="http://git.openmicroscopy.org/?p=bioformats.git;a=blob;f=components/bio-formats/src/loci/formats/in/PQBinReader.java;hb=HEAD">Gitweb</a></dd></dl> | ||
* | ||
* Please Note: This format holds FLIM data arranged so that each decay is stored contiguously. | ||
* Therefore, as in other FLIM format readers e.g. SDTReader.java, on the first call to openBytes | ||
* the whole data cube ( x,y,t) (NB actually t not real-time T) is loaded from the file to a buffer. | ||
* On further calls to openBytes the appropriate 2D (x,y)plane (timebin) is returned from this buffer. | ||
* This is in the interest of significantly improved performance when all the planes are requested one after another. | ||
* There will be a performance cost if a single plane is requested but this is highly unlikely for FLIM data. | ||
* | ||
*/ | ||
public class PQBinReader extends FormatReader { | ||
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// -- Constants -- | ||
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public static final int HEADER_SIZE = 20; | ||
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// -- Fields -- | ||
/* | ||
* Number of time bins in lifetime histogram. | ||
*/ | ||
protected int timeBins; | ||
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/* | ||
* Array to hold re-ordered data for all the timeBins | ||
*/ | ||
protected byte[] dataStore = null; | ||
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/** | ||
* Whether to pre-load all lifetime bins for faster loading. | ||
*/ | ||
protected boolean preLoad = true; | ||
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// -- Constructor -- | ||
/** | ||
* Constructs a new PQBin reader. | ||
*/ | ||
public PQBinReader() { | ||
super("PicoQuant Bin", "bin"); | ||
domains = new String[]{FormatTools.FLIM_DOMAIN}; | ||
suffixSufficient = false; | ||
} | ||
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// -- IFormatReader API methods -- | ||
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/* @see loci.formats.IFormatReader#isThisType(RandomAccessInputStream) */ | ||
public boolean isThisType(RandomAccessInputStream stream) throws IOException { | ||
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long fileLength = stream.length(); | ||
int bpp = FormatTools.getBytesPerPixel(FormatTools.UINT32); | ||
stream.order(true); | ||
// Header | ||
int sizeX = stream.readInt(); | ||
int sizeY = stream.readInt(); | ||
float pixResol = stream.readFloat(); // resolution of time axis of every Decay (in ns) | ||
int sizeT = stream.readInt(); | ||
if (( sizeX * sizeY * sizeT * bpp) + HEADER_SIZE == fileLength) { | ||
return true; | ||
} | ||
else { | ||
return false; | ||
} | ||
} | ||
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/** | ||
* @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); | ||
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int sizeX = getSizeX(); | ||
int sizeY = getSizeY(); | ||
int bpp = FormatTools.getBytesPerPixel(getPixelType()); | ||
boolean little = isLittleEndian(); | ||
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int planeSize = sizeX * sizeY * timeBins * bpp; | ||
int timeBin = no; | ||
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int binSize = sizeX * sizeY * bpp; // size in Bytes of a single 2D timebin. | ||
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// if data is of a manageable size then pre-load for performance | ||
if (preLoad) { | ||
if (dataStore == null) | ||
{ | ||
// The whole plane (all timebins) is copied into storage | ||
// to allow different sub-plane sizes to be used for different timebins | ||
dataStore = new byte[planeSize]; | ||
byte[] rowBuf = new byte[bpp * timeBins * sizeX]; | ||
in.seek(HEADER_SIZE); | ||
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for (int row = 0; row < sizeY; row++) { | ||
in.read(rowBuf); | ||
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int input = 0; | ||
for (int col = 0; col < sizeX; col++) { | ||
// set output to first pixel of this row in 2D plane | ||
// corresponding to zeroth timeBin | ||
int output = (row * sizeX + col) * bpp; | ||
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for (int t = 0; t < timeBins; t++) { | ||
for (int bb = 0; bb < bpp; bb++) { | ||
dataStore[output + bb] = rowBuf[input + bb]; | ||
} | ||
output += binSize; | ||
input += bpp; | ||
} | ||
} | ||
} | ||
} | ||
// chanStore loaded | ||
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// copy 2D plane from chanStore into buf | ||
int iLineSize = sizeX * bpp; | ||
int oLineSize = w * bpp; | ||
// offset to correct timebin yth line and xth pixel | ||
int input = (binSize * timeBin) + (y * iLineSize) + (x * bpp); | ||
int output = 0; | ||
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for (int row = 0; row < h; row++) { | ||
System.arraycopy(dataStore, input, buf, output, oLineSize); | ||
input += iLineSize; | ||
output += oLineSize; | ||
} | ||
} // endif preLoad | ||
else { // load each plane individually for large data | ||
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byte[] rowBuf = new byte[bpp * timeBins * w]; | ||
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in.seek(HEADER_SIZE + (y * sizeX * bpp * timeBins)); | ||
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for (int row = 0; row < h; row++) { | ||
in.skipBytes(x * bpp * timeBins); | ||
in.read(rowBuf); | ||
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for (int col = 0; col < w; col++) { | ||
int output = (row * w + col) * bpp; | ||
int input = (col * timeBins + timeBin) * bpp; | ||
for (int bb = 0; bb < bpp; bb++) { | ||
buf[output + bb] = rowBuf[input + bb]; | ||
} | ||
} | ||
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in.skipBytes(bpp * timeBins * (sizeX - x - w)); | ||
} | ||
} // end else | ||
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return buf; | ||
} | ||
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/* @see loci.formats.IFormatReader#close(boolean) */ | ||
public void close(boolean fileOnly) throws IOException { | ||
super.close(fileOnly); | ||
if (!fileOnly) { | ||
// init preLoading | ||
dataStore = null; | ||
timeBins = 0; | ||
preLoad = true; | ||
} | ||
} | ||
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// -- Internal FormatReader API methods -- | ||
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/* @see loci.formats.FormatReader#initFile(String) */ | ||
protected void initFile(String id) throws FormatException, IOException { | ||
super.initFile(id); | ||
in = new RandomAccessInputStream(id); | ||
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CoreMetadata m = core.get(0); | ||
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m.littleEndian = true; | ||
in.order(isLittleEndian()); | ||
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LOGGER.info("Reading header PQBin"); | ||
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// Header | ||
m.sizeX = in.readInt(); | ||
m.sizeY = in.readInt(); | ||
float pixResol = in.readFloat(); // Resolution of every Pixel in Image (in µm) | ||
m.sizeT = in.readInt(); // Number of DataPoints per Decay | ||
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float timeResol = in.readFloat(); // resolution of time axis of every Decay (in ns) | ||
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timeBins = m.sizeT; | ||
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m.sizeZ = 1; | ||
m.sizeC = 1; | ||
m.dimensionOrder = "XYZCT"; | ||
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m.pixelType = FormatTools.UINT32; | ||
m.rgb = false; | ||
m.imageCount = m.sizeT; | ||
m.indexed = false; | ||
m.falseColor = false; | ||
m.metadataComplete = true; | ||
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m.moduloT.type = FormatTools.LIFETIME; | ||
m.moduloT.parentType = FormatTools.SPECTRA; | ||
m.moduloT.typeDescription = "TCSPC"; | ||
m.moduloT.start = 0; | ||
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float timeBase = timeResol * 1000; // Convert to ps | ||
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m.moduloT.step = timeBase / timeBins; | ||
m.moduloT.end = m.moduloT.step * (m.sizeT - 1); | ||
m.moduloT.unit = "ps"; | ||
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// disable pre-load mode for very large files | ||
// threshold is set to smaller than the size of the largest test file currently available | ||
if ( m.sizeX * m.sizeY * m.sizeT > (900 * 200 * 200)) { | ||
preLoad = false; | ||
} | ||
else { | ||
preLoad = true; | ||
} | ||
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MetadataStore store = makeFilterMetadata(); | ||
MetadataTools.populatePixels(store, this); | ||
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PositiveFloat pRpf = new PositiveFloat((double)pixResol); | ||
store.setPixelsPhysicalSizeX(pRpf, 0); | ||
store.setPixelsPhysicalSizeY(pRpf, 0); | ||
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} | ||
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} |
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