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3800a654 | 1 | // $Id: AliHLTPHOSFourier.cxx 34951 2009-09-23 14:35:38Z phille $ |
2 | ||
3 | /************************************************************************** | |
4 | * This file is property of and copyright by the Experimental Nuclear * | |
5 | * Physics Group, Dep. of Physics * | |
6 | * University of Oslo, Norway, 2007 * | |
7 | * * | |
8 | * Author: Per Thomas Hille <perthi@fys.uio.no> for the ALICE HLT Project.* | |
9 | * Contributors are mentioned in the code where appropriate. * | |
10 | * Please report bugs to perthi@fys.uio.no * | |
11 | * * | |
12 | * Permission to use, copy, modify and distribute this software and its * | |
13 | * documentation strictly for non-commercial purposes is hereby granted * | |
14 | * without fee, provided that the above copyright notice appears in all * | |
15 | * copies and that both the copyright notice and this permission notice * | |
16 | * appear in the supporting documentation. The authors make no claims * | |
17 | * about the suitability of this software for any purpose. It is * | |
18 | * provided "as is" without express or implied warranty. * | |
19 | **************************************************************************/ | |
20 | #include "AliHLTCaloFourier.h" | |
21 | ||
22 | //#include "AliHLTCaloRcuFFTDataStruct.h" | |
23 | ||
76ffc0ce | 24 | #include "AliHLTCaloConstants.h" |
25 | ||
4f4b7ba4 | 26 | ClassImp(AliHLTCaloFourier); |
27 | ||
76ffc0ce | 28 | |
29 | ||
3800a654 | 30 | AliHLTCaloFourier::AliHLTCaloFourier() : fFFT_own(0), |
31 | fFFTInputArray(0), | |
32 | fFFTOutputArray(0), | |
33 | fIsFirstChannel(true), | |
34 | fFixedDataSize(0), | |
35 | fFFTOupuStruct(), | |
36 | fCurrentEvent(0) | |
37 | { | |
38 | ||
39 | ||
40 | } | |
41 | ||
42 | ||
76ffc0ce | 43 | |
44 | ||
3800a654 | 45 | AliHLTCaloFourier::AliHLTCaloFourier(const AliHLTCaloFourier&) : fFFT_own(0), |
46 | fFFTInputArray(0), | |
47 | fFFTOutputArray(0), | |
48 | fIsFirstChannel(true), | |
49 | fFixedDataSize(0), | |
50 | fFFTOupuStruct(), | |
51 | fCurrentEvent(0) | |
52 | ||
53 | { | |
54 | ||
55 | } | |
56 | ||
57 | ||
76ffc0ce | 58 | |
3800a654 | 59 | AliHLTCaloFourier::~AliHLTCaloFourier() |
60 | { | |
61 | ||
62 | } | |
63 | ||
64 | ||
65 | ||
66 | AliHLTCaloRcuFFTDataStruct | |
67 | AliHLTCaloFourier::GetPSD() | |
68 | { | |
69 | return fFFTOupuStruct; | |
70 | } | |
71 | ||
72 | ||
73 | ||
74 | void | |
75 | AliHLTCaloFourier::ProcessFourier(const Int_t *data, const int length, const int /*z*/, const int /*x*/, const int gain, const int event) | |
76 | { | |
77 | Double_t re = 0; | |
78 | Double_t im = 0; | |
79 | ||
80 | if( (event > 0 ) && (event != fCurrentEvent )) | |
81 | { | |
82 | fCurrentEvent = event; | |
83 | ResetEventPSD(gain); | |
84 | } | |
85 | ||
86 | if(fIsFirstChannel == true) | |
87 | { | |
88 | fCurrentEvent = event; | |
89 | fIsFirstChannel = false; | |
90 | fFixedDataSize = length; | |
91 | Int_t n_size = fFixedDataSize +1; | |
92 | fFFT_own = TVirtualFFT::FFT(1, &n_size, "R2C ES K"); | |
93 | Init(); | |
94 | } | |
95 | ||
96 | if( CheckSignal(data, length) == true) | |
97 | { | |
98 | Int2Double(data, fFFTInputArray, fFixedDataSize ); | |
99 | fFFT_own->SetPoints( fFFTInputArray ); | |
100 | fFFT_own->Transform(); | |
101 | ||
102 | for(int j=0; j < length; j++) | |
103 | { | |
104 | fFFT_own->GetPointComplex(j, re, im); | |
105 | fFFTOupuStruct.fGlobalAccumulatedPSD[gain][j] += EvaluateMagnitude(re, im); | |
106 | fFFTOupuStruct.fGlobalLastPSD[gain][j] += EvaluateMagnitude(re, im); | |
107 | ||
108 | } | |
109 | } | |
110 | // printf("AliHLTCaloFourier::ProcessFourier; (z, x, gain) = (%d, %d, %d), length = %d", z, x, gain, length); | |
111 | } | |
112 | ||
113 | void | |
114 | AliHLTCaloFourier::ResetEventPSD(const int gain) | |
115 | { | |
116 | cout << " AliHLTCaloFourier::ResetEventPS, resetting event PSD "<< endl; | |
117 | for(int i = 0; i < fFixedDataSize; i++ ) | |
118 | { | |
119 | fFFTOupuStruct.fGlobalLastPSD[gain][i] = 0; | |
120 | } | |
121 | } | |
122 | ||
123 | ||
124 | bool | |
125 | //AliHLTCaloFourier::CheckSignal(const UInt_t *data, const int length) | |
126 | AliHLTCaloFourier::CheckSignal(const Int_t *data, const int length) | |
127 | { | |
128 | // UInt_t tmpMax = Max( const_cast< UInt_t *>(data), length); | |
129 | // UInt_t tmpMin = Min( const_cast< UInt_t *>(data), length); | |
130 | ||
131 | ||
132 | Int_t tmpMax = Max( const_cast< Int_t *>(data), length); | |
133 | Int_t tmpMin = Min( const_cast< Int_t *>(data), length); | |
134 | ||
135 | ||
136 | // if( (tmpMax -tmpMin) > 200) | |
137 | if( (tmpMax -tmpMin) > 100) | |
138 | { | |
139 | cout << "FourierAna::CheckSignal min = "<< tmpMin << " max = " << tmpMax << endl; | |
140 | } | |
141 | ||
76ffc0ce | 142 | if( (tmpMax >= AliHLTCaloConstants::GetMAXBINVALUE() ) || tmpMin < 1 ) |
3800a654 | 143 | { |
144 | cout << "ERROR, FourierAna::CheckSignal failed, signal out of range, min= "<< tmpMin << "max = " << tmpMax << endl; | |
145 | return false; | |
146 | } | |
147 | else | |
148 | { | |
149 | return true; | |
150 | } | |
151 | ||
152 | //return true; | |
153 | } | |
154 | ||
155 | ||
156 | void | |
157 | AliHLTCaloFourier::Init() | |
158 | { | |
159 | fFFTInputArray = new double[fFixedDataSize]; | |
160 | fFFTOutputArray = new double[fFixedDataSize]; | |
161 | ||
76ffc0ce | 162 | for(int gain = 0; gain < AliHLTCaloConstants::GetNGAINS(); gain ++) |
3800a654 | 163 | { |
164 | fFFTOupuStruct.fDataLength = fFixedDataSize; | |
165 | ||
166 | for(int k= 0; k <fFixedDataSize; k++ ) | |
167 | { | |
168 | fFFTInputArray[k] = 0; | |
169 | fFFTOutputArray[k] = 0; | |
170 | ||
171 | } | |
76ffc0ce | 172 | for(int i=0; i < AliHLTCaloConstants::GetALTROMAXSAMPLES() ; i++) |
3800a654 | 173 | { |
174 | fFFTOupuStruct.fGlobalAccumulatedPSD[gain][i] = 0; | |
175 | fFFTOupuStruct.fGlobalLastPSD[gain][i] = 0; | |
176 | } | |
177 | } | |
178 | } | |
179 | ||
180 | ||
181 | double | |
182 | AliHLTCaloFourier::EvaluateMagnitude(const double re, const double im) | |
183 | { | |
184 | return re*re + im*im; | |
185 | } | |
186 | ||
187 | ||
188 | void | |
189 | AliHLTCaloFourier::Int2Double(const Int_t *inputarray, double *outputarray, const int size) | |
190 | { | |
191 | for(int i=0; i< size; i++) | |
192 | { | |
193 | outputarray[i] = (double)inputarray[i]; | |
194 | } | |
195 | } |