Line data    Source code

       1             : //# AsdmIndex.h: Index for the ASDM Storage Manager
       2             : //# Copyright (C) 2012
       3             : //# Associated Universities, Inc. Washington DC, USA.
       4             : //# (c) European Southern Observatory, 2012
       5             : //# Copyright by ESO (in the framework of the ALMA collaboration)
       6             : //#
       7             : //# This library is free software; you can redistribute it and/or modify it
       8             : //# under the terms of the GNU Library General Public License as published by
       9             : //# the Free Software Foundation; either version 2 of the License, or (at your
      10             : //# option) any later version.
      11             : //#
      12             : //# This library is distributed in the hope that it will be useful, but WITHOUT
      13             : //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      14             : //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
      15             : //# License for more details.
      16             : //#
      17             : //# You should have receied a copy of the GNU Library General Public License
      18             : //# along with this library; if not, write to the Free Software Foundation,
      19             : //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
      20             : //#
      21             : //# Correspondence concerning AIPS++ should be addressed as follows:
      22             : //#        Internet email: aips2-request@nrao.edu.
      23             : //#        Postal address: AIPS++ Project Office
      24             : //#                        National Radio Astronomy Observatory
      25             : //#                        520 Edgemont Road
      26             : //#                        Charlottesville, VA 22903-2475 USA
      27             : //#
      28             : //# $Id: AsdmColumn.h 19324 2011-11-21 07:29:55Z diepen $
      29             : 
      30             : #ifndef ASDM_ASDMINDEX_H
      31             : #define ASDM_ASDMINDEX_H
      32             : 
      33             : 
      34             : //# Includes
      35             : #include <casacore/casa/aips.h>
      36             : #include <casacore/casa/vector.h>
      37             : #include <ostream>
      38             : 
      39             : namespace casacore{
      40             : 
      41             : class AipsIO;
      42             : }
      43             : 
      44             : namespace casa {
      45             : 
      46             : //# Forward declaration.
      47             : 
      48             : 
      49             : // <summary>
      50             : // An index entry for the ASDM Storage Manager.
      51             : // </summary>
      52             : 
      53             : // <use visibility=local>
      54             : 
      55             : // <reviewed reviewer="UNKNOWN" date="before2004/08/25" tests="tAsdmStMan.cc">
      56             : // </reviewed>
      57             : 
      58             : // <prerequisite>
      59             : //# Classes you should understand before using this one.
      60             : //   <li> <linkto class=AsdmStMan>AsdmStMan</linkto>
      61             : // </prerequisite>
      62             : 
      63             : // <synopsis>
      64             : // ASDM stores all data of a time slot in a data array for the cross-correlation
      65             : // data and a data array for the auto-correlation data.
      66             : // An object of this class defines the shapes and locations of the data for
      67             : // each time slot.
      68             : // </synopsis>
      69             : 
      70             : struct AsdmIndex
      71             : {
      72             :   // Get nr of complex values in cross-correlation data block.
      73             :   casacore::uInt dataSize() const;
      74             : 
      75             :   // Get number of rows spanned by the data blocks.
      76      345095 :   casacore::uInt nrow() const
      77      345095 :   { return nBl; } 
      78             : 
      79             :   //# casacore::Data members.
      80             :   casacore::uInt  fileNr;  // The file index in the list of BDFs files containing the binary data.
      81             :   casacore::uInt  nBl, nSpw, nChan, nPol;
      82             :   casacore::uInt  stepBl; // The number of values between two consecutive baselines for the same data description.
      83             :   casacore::uInt  iSpw;   // The data description index in the sequence of basebands/spectral windows in the BDF.
      84             :   casacore::Int64 row;    // The index (0-based) in the casacore::MS Main table of the first of the rows associated to this index.
      85             :   std::vector<double> scaleFactors;    //# crossdata scale factor per spw
      86             :   casacore::Int64 fileOffset;     // The offset from the beginning of the file to the beginning of the block of data
      87             :                         // to be read.
      88             :   casacore::uInt  blockOffset;    // The offset from the beginning of the block of data read in the BDF
      89             :                         // to the first value of the 1st baseline of data with data description of index spw
      90             :   casacore::Short dataType;       //# data type: 0=short 1=int32 3=float cross data
      91             :   //                                   10=auto 11=wvr? 12=zerolags
      92             : };
      93             : 
      94             :   // Read/write object into AipsIO.
      95             :   // <group>
      96             :   casacore::AipsIO& operator<< (casacore::AipsIO&, const AsdmIndex&);
      97             :   casacore::AipsIO& operator>> (casacore::AipsIO&, AsdmIndex&);
      98             : 
      99             :   std::ostream& operator<<(std::ostream& os, const AsdmIndex& ix);
     100             : 
     101             : 
     102             : } //# end namespace
     103             : 
     104             : #endif