/usr/include/casacore/images/Images/FITS2Image.tcc is in casacore-dev 2.2.0-2.
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//# Copyright (C) 2001,2002
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library 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 Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//# $Id:
#ifndef IMAGES_FITS2IMAGE_TCC
#define IMAGES_FITS2IMAGE_TCC
#include <casacore/images/Images/FITSImage.h>
#include <casacore/casa/Arrays/IPosition.h>
#include <casacore/coordinates/Coordinates/CoordinateSystem.h>
#include <casacore/casa/Containers/Record.h>
#include <casacore/casa/Exceptions/Error.h>
#include <casacore/fits/FITS/hdu.h>
#include <casacore/fits/FITS/FITSKeywordUtil.h>
#include <casacore/images/Images/ImageInfo.h>
#include <casacore/images/Images/ImageFITSConverter.h>
#include <casacore/casa/Logging/LogIO.h>
#include <casacore/casa/BasicMath/Math.h>
#include <casacore/casa/Quanta/Unit.h>
#include <casacore/casa/Utilities/DataType.h>
#include <casacore/casa/BasicSL/String.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
template <typename T>
void FITSImage::crackHeader (CoordinateSystem& cSys,
IPosition& shape, ImageInfo& imageInfo,
Unit& brightnessUnit, RecordInterface& miscInfo,
Float& scale, Float& offset,
uChar& magicUChar, Short& magicShort,
Int& magicInt, Bool& hasBlanks,
LogIO& os, FitsInput& infile, uInt whichRep)
{
// Shape
PrimaryArray<T> fitsImage(infile);
Int ndim = fitsImage.dims();
shape.resize(ndim);
for (Int i=0; i<ndim; i++) {
shape(i) = fitsImage.dim(i);
}
// Get header as Vector of strings
Vector<String> header = fitsImage.kwlist_str(True);
// Get Coordinate System. Return un-used FITS cards in a Record for further use.
Record headerRec;
Bool dropStokes = True;
Int stokesFITSValue = 1;
cSys = ImageFITSConverter::getCoordinateSystem(stokesFITSValue, headerRec, header,
os, whichRep, shape, dropStokes);
ndim = shape.nelements();
_hasBeamsTable = headerRec.isDefined(ImageFITSConverter::CASAMBM)
&& headerRec.asRecord(ImageFITSConverter::CASAMBM).asBool("value");
// BITPIX
T* t=0;
DataType dataType = whatType(t);
//
Int bitpix;
Record subRec = headerRec.asRecord("bitpix");
subRec.get("value", bitpix);
headerRec.removeField("bitpix");
if (dataType==TpFloat) {
if (bitpix != -32) {
throw (AipsError("bitpix card inconsistent with data type: expected bitpix = -32"));
}
} else if (dataType==TpDouble) {
if (bitpix != -64) {
throw (AipsError("bitpix card inconsistent with data type: expected bitpix = -64"));
}
} else if (dataType==TpInt) {
if (bitpix != 32) {
throw (AipsError("bitpix card inconsistent with data type: expected bitpix = 32"));
}
} else if (dataType==TpShort) {
if (bitpix != 16) {
throw (AipsError("bitpix card inconsistent with data type: expected bitpix = 16"));
}
} else if (dataType==TpUChar) {
if (bitpix != 8) {
throw (AipsError("bitpix card inconsistent with data type: expected bitpix = 8"));
}
} else {
throw (AipsError("Unsupported Template type; Float & Double only are supported"));
}
// Scale and blank (will only be present for Int and Short)
Double s = 1.0;
Double o = 0.0;
if (headerRec.isDefined("bscale")) {
subRec = headerRec.asRecord("bscale");
subRec.get("value", s);
headerRec.removeField("bscale");
}
if (headerRec.isDefined("bzero")) {
subRec = headerRec.asRecord("bzero");
subRec.get("value", o);
headerRec.removeField("bzero");
}
scale = s;
offset = o;
// Will only be present for Int and Short and uChar
hasBlanks = False;
if (headerRec.isDefined("blank")) {
subRec = headerRec.asRecord("blank");
Int m;
subRec.get("value", m);
headerRec.removeField("blank");
if (dataType==TpUChar) {
magicUChar = m;
} else if (dataType==TpShort) {
magicShort = m;
} else if (dataType==TpInt) {
magicInt = m;
} else {
magicUChar = m;
magicShort = m;
magicInt = m;
}
hasBlanks = True;
}
// Brightness Unit
brightnessUnit = ImageFITSConverter::getBrightnessUnit(headerRec, os);
// ImageInfo
imageInfo = ImageFITSConverter::getImageInfo(headerRec);
// If we had one of those unofficial pseudo-Stokes on the Stokes axis, store it in the imageInfo
if (stokesFITSValue != -1) {
ImageInfo::ImageTypes type = ImageInfo::imageTypeFromFITS(stokesFITSValue);
if (type!= ImageInfo::Undefined) {
imageInfo.setImageType(type);
}
}
// Get rid of anything else we don't want to end up in MiscInfo
// that will have passed through the FITS parsing process
Vector<String> ignore(9);
ignore(0) = "^datamax$";
ignore(1) = "^datamin$";
ignore(2) = "^origin$";
ignore(3) = "^extend$";
ignore(4) = "^blocked$";
ignore(5) = "^blank$";
ignore(6) = "^simple$";
ignore(7) = "bscale";
ignore(8) = "bzero";
FITSKeywordUtil::removeKeywords(headerRec, ignore);
// MiscInfo is whats left
ImageFITSConverter::extractMiscInfo(miscInfo, headerRec);
// Get and store history.
Vector<String> lines;
String groupType;
ConstFitsKeywordList kw = fitsImage.kwlist();
kw.first();
// Set the contents of the ImageInterface logger object (history)
LoggerHolder& log = logger();
ImageFITSConverter::restoreHistory(log, kw);
// Try and find the restoring beam in the history cards if
// its not in the header
if (! imageInfo.hasBeam()) {
imageInfo.getRestoringBeam(log);
}
}
template <typename T>
void FITSImage::crackExtHeader (CoordinateSystem& cSys,
IPosition& shape, ImageInfo& imageInfo,
Unit& brightnessUnit, RecordInterface& miscInfo,
Float& scale, Float& offset, uChar& magicUChar,
Short& magicShort,
Int& magicInt, Bool& hasBlanks,
LogIO& os, FitsInput& infile, uInt whichRep)
{
// Shape
ImageExtension<T> fitsImage(infile);
Int ndim = fitsImage.dims();
shape.resize(ndim);
for (Int i=0; i<ndim; i++) {
shape(i) = fitsImage.dim(i);
}
// Get header as Vector of strings
Vector<String> header = fitsImage.kwlist_str(True);
// Get Coordinate System. Return un-used FITS cards in a Record for further use.
Record headerRec;
Bool dropStokes = True;
Int stokesFITSValue = 1;
cSys = ImageFITSConverter::getCoordinateSystem(stokesFITSValue, headerRec, header,
os, whichRep, shape, dropStokes);
ndim = shape.nelements();
_hasBeamsTable = headerRec.isDefined(ImageFITSConverter::CASAMBM)
&& headerRec.asRecord(ImageFITSConverter::CASAMBM).asBool("value");
// BITPIX
T* t=0;
DataType dataType = whatType(t);
//
Int bitpix;
Record subRec = headerRec.asRecord("bitpix");
subRec.get("value", bitpix);
headerRec.removeField("bitpix");
if (dataType==TpFloat) {
if (bitpix != -32) {
throw (AipsError("bitpix card inconsistent with data type: expected bitpix = -32"));
}
} else if (dataType==TpDouble) {
if (bitpix != -64) {
throw (AipsError("bitpix card inconsistent with data type: expected bitpix = -64"));
}
} else if (dataType==TpInt) {
if (bitpix != 32) {
throw (AipsError("bitpix card inconsistent with data type: expected bitpix = 32"));
}
} else if (dataType==TpShort) {
if (bitpix != 16) {
throw (AipsError("bitpix card inconsistent with data type: expected bitpix = 16"));
}
} else if (dataType==TpUChar) {
if (bitpix != 8) {
throw (AipsError("bitpix card inconsistent with data type: expected bitpix = 16"));
}
} else {
throw (AipsError("Unsupported Template type; Float & Double only are supported"));
}
// Scale and blank (will only be present for Int and Short)
Double s = 1.0;
Double o = 0.0;
if (headerRec.isDefined("bscale")) {
subRec = headerRec.asRecord("bscale");
subRec.get("value", s);
headerRec.removeField("bscale");
}
if (headerRec.isDefined("bzero")) {
subRec = headerRec.asRecord("bzero");
subRec.get("value", o);
headerRec.removeField("bzero");
}
scale = s;
offset = o;
// Will only be present for Int and Short
hasBlanks = False;
if (headerRec.isDefined("blank")) {
subRec = headerRec.asRecord("blank");
Int m;
subRec.get("value", m);
headerRec.removeField("blank");
if (dataType==TpUChar) {
magicUChar = m;
} else if (dataType==TpShort) {
magicShort = m;
} else if (dataType==TpInt) {
magicInt = m;
} else {
magicUChar = m;
magicShort = m;
magicInt = m;
}
hasBlanks = True;
}
// Brightness Unit
brightnessUnit = ImageFITSConverter::getBrightnessUnit(headerRec, os);
// ImageInfo
imageInfo = ImageFITSConverter::getImageInfo(headerRec);
// If we had one of those unofficial pseudo-Stokes on the Stokes axis, store it in the imageInfo
if (stokesFITSValue != -1) {
ImageInfo::ImageTypes type = ImageInfo::imageTypeFromFITS(stokesFITSValue);
if (type!= ImageInfo::Undefined) {
imageInfo.setImageType(type);
}
}
// Get rid of anything else we don't want to end up in MiscInfo
// that will have passed through the FITS parsing process
Vector<String> ignore(12);
ignore(0) = "^datamax$";
ignore(1) = "^datamin$";
ignore(2) = "^origin$";
ignore(3) = "^extend$";
ignore(4) = "^blocked$";
ignore(5) = "^blank$";
ignore(6) = "^simple$";
ignore(7) = "bscale";
ignore(8) = "bzero";
ignore(9) = "xtension";
ignore(10) = "pcount";
ignore(11) = "gcount";
FITSKeywordUtil::removeKeywords(headerRec, ignore);
// MiscInfo is whats left
ImageFITSConverter::extractMiscInfo(miscInfo, headerRec);
// Get and store history.
Vector<String> lines;
String groupType;
ConstFitsKeywordList kw = fitsImage.kwlist();
kw.first();
// Set the contents of the ImageInterface logger object (history)
LoggerHolder& log = logger();
ImageFITSConverter::restoreHistory(log, kw);
// Try and find the restoring beam in the history cards if
// its not in the header
if (! imageInfo.hasSingleBeam()) {
imageInfo.getRestoringBeam(log);
}
}
/*
template void FITSImage::crackHeader<Double> (CoordinateSystem &, IPosition &, ImageInfo &, Unit &, RecordInterface &, Float &, Float &, Short &, Int &, Bool &, LogIO &, FitsInput &, uInt);
template void FITSImage::crackHeader<Float> (CoordinateSystem &, IPosition &, ImageInfo &, Unit &, RecordInterface &, Float &, Float &, Short &, Int &, Bool &, LogIO &, FitsInput &, uInt);
template void FITSImage::crackHeader<Int> (CoordinateSystem &, IPosition &, ImageInfo &, Unit &, RecordInterface &, Float &, Float &, Short &, Int &, Bool &, LogIO &, FitsInput &, uInt);
template void FITSImage::crackHeader<Short> (CoordinateSystem &, IPosition &, ImageInfo &, Unit &, RecordInterface &, Float &, Float &, Short &, Int &, Bool &, LogIO &, FitsInput &, uInt);
*/
} //# NAMESPACE CASACORE - END
#endif
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