1 | //#--------------------------------------------------------------------------- |
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2 | //# FITSreader.h: ATNF single-dish FITS reader. |
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3 | //#--------------------------------------------------------------------------- |
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4 | //# livedata - processing pipeline for single-dish, multibeam spectral data. |
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5 | //# Copyright (C) 2000-2009, Australia Telescope National Facility, CSIRO |
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6 | //# |
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7 | //# This file is part of livedata. |
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8 | //# |
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9 | //# livedata is free software: you can redistribute it and/or modify it under |
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10 | //# the terms of the GNU General Public License as published by the Free |
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11 | //# Software Foundation, either version 3 of the License, or (at your option) |
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12 | //# any later version. |
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13 | //# |
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14 | //# livedata is distributed in the hope that it will be useful, but WITHOUT |
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15 | //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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16 | //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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17 | //# more details. |
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18 | //# |
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19 | //# You should have received a copy of the GNU General Public License along |
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20 | //# with livedata. If not, see <http://www.gnu.org/licenses/>. |
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21 | //# |
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22 | //# Correspondence concerning livedata may be directed to: |
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23 | //# Internet email: mcalabre@atnf.csiro.au |
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24 | //# Postal address: Dr. Mark Calabretta |
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25 | //# Australia Telescope National Facility, CSIRO |
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26 | //# PO Box 76 |
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27 | //# Epping NSW 1710 |
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28 | //# AUSTRALIA |
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29 | //# |
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30 | //# http://www.atnf.csiro.au/computing/software/livedata.html |
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31 | //# $Id: FITSreader.h,v 19.11 2009-09-29 07:33:38 cal103 Exp $ |
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32 | //#--------------------------------------------------------------------------- |
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33 | //# The FITSreader class is an abstract base class for the Parkes Multibeam |
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34 | //# RPFITS and SDFITS readers. |
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35 | //# |
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36 | //# Original: 2000/08/14 Mark Calabretta |
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37 | //#--------------------------------------------------------------------------- |
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38 | |
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39 | #ifndef ATNF_FITSREADER_H |
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40 | #define ATNF_FITSREADER_H |
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41 | |
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42 | #include <atnf/PKSIO/MBrecord.h> |
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43 | |
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44 | using namespace std; |
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45 | |
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46 | |
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47 | // <summary> |
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48 | // ATNF single-dish FITS reader. |
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49 | // </summary> |
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50 | |
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51 | //class FITSreader |
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52 | class FITSreader |
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53 | { |
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54 | public: |
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55 | // Destructor. |
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56 | virtual ~FITSreader() {}; |
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57 | |
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58 | // Open the FITS file for reading. Returns a pointer, beams, to an array |
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59 | // of length nBeam that indicates which beams are present in the data. |
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60 | // Beam selection is done by zeroing the unwanted elements of this array. |
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61 | // Likewise for IF selection (e.g. for frequency-switched data). |
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62 | virtual int open( |
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63 | char *FITSname, |
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64 | int &nBeam, |
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65 | int* &beams, |
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66 | int &nIF, |
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67 | int* &IFs, |
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68 | int* &nChan, |
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69 | int* &nPol, |
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70 | int* &haveXPol, |
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71 | int &haveBase, |
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72 | int &haveSpectra, |
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73 | int &extraSysCal) = 0; |
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74 | |
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75 | // Get metadata. |
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76 | virtual int getHeader( |
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77 | char observer[32], |
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78 | char project[32], |
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79 | char telescope[32], |
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80 | double antPos[3], |
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81 | char obsType[32], |
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82 | char bunit[32], |
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83 | float &equinox, |
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84 | char radecsys[32], |
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85 | char dopplerFrame[32], |
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86 | char datobs[32], |
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87 | double &utc, |
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88 | double &refFreq, |
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89 | double &bandwidth) = 0; |
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90 | |
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91 | // Get frequency parameters for each IF. |
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92 | virtual int getFreqInfo( |
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93 | int &nIF, |
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94 | double* &startFreq, |
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95 | double* &endFreq) = 0; |
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96 | |
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97 | // Set data selection criteria. Channel numbering is 1-relative, zero or |
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98 | // negative channel numbers are taken to be offsets from the last channel. |
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99 | // Coordinate systems are |
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100 | // 0: equatorial (RA,Dec), |
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101 | // 1: horizontal (Az,El), |
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102 | // 2: feed-plane, |
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103 | // 3: zenithal position angle of feed and elevation, (ZPA,El). |
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104 | int select( |
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105 | const int startChan[], |
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106 | const int endChan[], |
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107 | const int refChan[], |
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108 | const int getSpectra = 1, |
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109 | const int getXPol = 0, |
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110 | const int getFeedPos = 0, |
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111 | const int getPointing = 0, |
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112 | const int coordSys = 0); |
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113 | |
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114 | |
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115 | // Find the range in time and position of the data selected. |
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116 | virtual int findRange( |
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117 | int &nRow, |
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118 | int &nSel, |
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119 | char dateSpan[2][32], |
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120 | double utcSpan[2], |
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121 | double* &positions) = 0; |
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122 | |
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123 | // Read the next data record. |
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124 | virtual int read( |
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125 | // PKSMBrecord &record) = 0; |
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126 | MBrecord &record) = 0; |
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127 | |
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128 | // Close the RPFITS file. |
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129 | virtual void close(void) = 0; |
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130 | |
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131 | protected: |
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132 | int *cBeams, *cEndChan, cGetFeedPos, cCoordSys, cGetSpectra, cGetXPol, |
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133 | cHaveBase, cHaveSpectra, *cHaveXPol, *cIFs, cNBeam, *cNChan, cNIF, |
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134 | *cNPol, *cRefChan, *cStartChan; |
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135 | |
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136 | // For use in constructing messages. |
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137 | char cMsg[256]; |
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138 | |
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139 | }; |
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140 | |
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141 | #endif |
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