1 | #include <duchamp/FitsIO/ReadExisting.hh> |
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2 | #include <duchamp/duchamp.hh> |
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3 | #include <duchamp/Cubes/cubes.hh> |
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4 | #include <fitsio.h> |
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5 | #include <wcslib/wcsunits.h> |
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6 | |
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7 | namespace duchamp { |
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8 | |
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9 | ReadExisting::ReadExisting() |
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10 | { |
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11 | itsCube = 0; |
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12 | itsArray = 0; |
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13 | itsFptr = 0; |
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14 | } |
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15 | |
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16 | ReadExisting::ReadExisting(Cube *cube): |
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17 | itsCube(cube) |
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18 | { |
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19 | itsArray = this->itsCube->getRecon(); |
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20 | itsFptr = 0; |
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21 | } |
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22 | |
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23 | ReadExisting::ReadExisting(const ReadExisting &other) |
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24 | { |
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25 | this->operator=(other); |
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26 | } |
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27 | |
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28 | ReadExisting& ReadExisting::operator= (const ReadExisting& other) |
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29 | { |
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30 | if(this==&other) return *this; |
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31 | this->itsCube = other.itsCube; |
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32 | this->itsArray = other.itsArray; |
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33 | this->itsFilename = other.itsFilename; |
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34 | this->itsFptr = other.itsFptr; |
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35 | return *this; |
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36 | } |
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37 | |
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38 | OUTCOME ReadExisting::openFile() |
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39 | { |
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40 | int status=0; |
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41 | fits_open_file(&this->itsFptr,this->itsFilename.c_str(),READONLY,&status); |
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42 | if(status){ |
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43 | DUCHAMPWARN("Reading Cube", "Error opening file " << this->itsFilename); |
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44 | fits_report_error(stderr, status); |
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45 | return FAILURE; |
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46 | } |
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47 | return SUCCESS; |
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48 | } |
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49 | |
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50 | OUTCOME ReadExisting::checkDim() |
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51 | { |
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52 | OUTCOME result=SUCCESS; |
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53 | if(this->itsFptr==0){ |
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54 | DUCHAMPERROR("Reading Cube","FITS file not open"); |
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55 | result = FAILURE; |
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56 | } |
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57 | else{ |
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58 | |
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59 | int status = 0, maxdim = 3; |
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60 | int bitpix,numAxesNew; |
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61 | long *dimAxesNew = new long[maxdim]; |
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62 | for(int i=0;i<maxdim;i++) dimAxesNew[i]=1; |
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63 | fits_get_img_param(this->itsFptr, maxdim, &bitpix, &numAxesNew, dimAxesNew, &status); |
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64 | if(status){ |
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65 | fits_report_error(stderr, status); |
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66 | result = FAILURE; |
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67 | } |
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68 | |
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69 | if(numAxesNew != this->itsCube->getNumDim()){ |
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70 | DUCHAMPERROR("Reading Cube", "Input cube " << this->itsFilename << " has a different number of axes to original!" |
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71 | << " (" << numAxesNew << " cf. " << this->itsCube->getNumDim() << ")"); |
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72 | result = FAILURE; |
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73 | } |
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74 | |
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75 | for(int i=0;i<numAxesNew;i++){ |
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76 | if(dimAxesNew[i]!=int(this->itsCube->getDimArray()[i])){ |
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77 | DUCHAMPERROR("Reading Cube", "Input cube " << this->itsFilename << " has different axis dimensions to original! Axis #" |
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78 | << i+1 << " has size " << dimAxesNew[i] << " cf. " << this->itsCube->getDimArray()[i] <<" in original."); |
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79 | result = FAILURE; |
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80 | } |
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81 | } |
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82 | |
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83 | |
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84 | char *comment = new char[80]; |
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85 | if(this->itsCube->pars().getFlagSubsection()){ |
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86 | char *subsection = new char[80]; |
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87 | status = 0; |
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88 | fits_read_key(this->itsFptr, TSTRING, (char *)keyword_subsection.c_str(), subsection, comment, &status); |
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89 | if(status){ |
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90 | DUCHAMPERROR("Reading Cube", "subsection keyword not present in reconFile."); |
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91 | result = FAILURE; |
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92 | } |
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93 | else{ |
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94 | if(this->itsCube->pars().getSubsection() != subsection){ |
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95 | DUCHAMPERROR("Reading Cube", "subsection keyword in reconFile (" << subsection |
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96 | << ") does not match that requested (" << this->itsCube->pars().getSubsection() << ")."); |
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97 | result = FAILURE; |
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98 | } |
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99 | } |
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100 | delete subsection; |
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101 | } |
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102 | |
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103 | } |
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104 | |
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105 | return result; |
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106 | |
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107 | } |
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108 | |
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109 | OUTCOME ReadExisting::readFromFile() |
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110 | { |
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111 | OUTCOME result=SUCCESS; |
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112 | if(this->itsFptr==0){ |
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113 | DUCHAMPERROR("Reading Cube","FITS file not open"); |
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114 | result = FAILURE; |
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115 | } |
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116 | else{ |
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117 | |
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118 | short int maxdim=3; |
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119 | long *fpixel = new long[maxdim]; |
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120 | for(int i=0;i<maxdim;i++) fpixel[i]=1; |
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121 | long *lpixel = new long[maxdim]; |
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122 | for(int i=0;i<maxdim;i++) lpixel[i]=this->itsCube->getDimArray()[i]; |
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123 | long *inc = new long[maxdim]; |
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124 | for(int i=0;i<maxdim;i++) inc[i]=1; |
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125 | long *dimAxesNew = new long[maxdim]; |
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126 | for(int i=0;i<maxdim;i++) dimAxesNew[i]=this->itsCube->getDimArray()[i]; |
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127 | int anynul; |
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128 | int colnum = 0; // want the first dataset in the FITS file |
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129 | int status = 0; |
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130 | |
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131 | if(fits_read_subset_flt(this->itsFptr, colnum, 3, dimAxesNew, fpixel, lpixel, inc, |
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132 | this->itsCube->pars().getBlankPixVal(), this->itsArray, &anynul, &status)){ |
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133 | DUCHAMPERROR("Recon Reader", "There was an error reading in the data array:"); |
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134 | fits_report_error(stderr, status); |
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135 | result = FAILURE; |
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136 | } |
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137 | else{ |
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138 | this->itsCube->setReconFlag(true); |
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139 | |
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140 | std::string header("BUNIT"); |
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141 | char *unit = new char[FLEN_VALUE]; |
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142 | char *comment = new char[80]; |
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143 | std::string fluxunits; |
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144 | fits_read_key(this->itsFptr, TSTRING, (char *)header.c_str(), unit, comment, &status); |
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145 | if (status){ |
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146 | DUCHAMPWARN("Cube Reader","Error reading BUNIT keyword: "); |
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147 | fits_report_error(stderr, status); |
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148 | return FAILURE; |
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149 | } |
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150 | else{ |
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151 | wcsutrn(0,unit); |
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152 | fluxunits = unit; |
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153 | } |
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154 | this->itsCube->convertFluxUnits(fluxunits,this->itsCube->pars().getNewFluxUnits(),RECON); |
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155 | } |
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156 | |
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157 | } |
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158 | return result; |
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159 | } |
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160 | |
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161 | OUTCOME ReadExisting::read() |
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162 | { |
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163 | OUTCOME result = this->checkPars(); |
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164 | if(result==SUCCESS) result=this->checkFile(); |
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165 | if(result==SUCCESS) result=this->openFile(); |
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166 | if(result==SUCCESS) result=this->checkDim(); |
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167 | if(result==SUCCESS) result=this->checkHeaders(); |
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168 | if(result==SUCCESS) result=this->readFromFile(); |
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169 | if(result==SUCCESS) result=this->closeFile(); |
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170 | return result; |
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171 | } |
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172 | |
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173 | OUTCOME ReadExisting::closeFile() |
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174 | { |
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175 | OUTCOME result=SUCCESS; |
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176 | int status = 0; |
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177 | if(this->itsFptr==0){ |
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178 | fits_close_file(this->itsFptr, &status); |
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179 | if (status){ |
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180 | DUCHAMPWARN("Reading Cube", "Error closing file " << this->itsFilename); |
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181 | fits_report_error(stderr, status); |
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182 | result=FAILURE; |
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183 | } |
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184 | } |
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185 | return result; |
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186 | } |
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187 | |
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188 | } |
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