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56673b84 | 1 | /************************************************************************** |
2 | * This file is property of and copyright by the ALICE HLT Project * | |
3 | * All rights reserved. * | |
4 | * * | |
5 | * Primary Author: Per Thomas Hille <perthi@fys.uio.no> * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
f809259d | 16 | #include "AliHLTPHOSDataCorruptor.h" |
17 | #include "AliHLTPHOSPulseGenerator.h" | |
18 | ||
19 | #include "TRandom.h" | |
20 | ||
21 | #include <iostream> | |
22 | ||
23 | using namespace std; | |
24 | ||
25 | ||
26 | AliHLTPHOSDataCorruptor::AliHLTPHOSDataCorruptor():fPulseGeneratorPtr(0), fRandomGeneratorPtr(0) | |
27 | { | |
f2a83724 | 28 | // cout << " AliHLTPHOSDataCorruptor::AliHLTPHOSDataCorruptor() creating new datacorruptor" << endl; |
f809259d | 29 | fPulseGeneratorPtr = new AliHLTPHOSPulseGenerator(100, 0, 300, 2, 10); |
30 | fRandomGeneratorPtr = new TRandom(); | |
31 | } | |
32 | ||
33 | ||
34 | AliHLTPHOSDataCorruptor::AliHLTPHOSDataCorruptor(const AliHLTPHOSDataCorruptor & ):fPulseGeneratorPtr(0), fRandomGeneratorPtr(0) | |
35 | { | |
36 | ||
37 | } | |
38 | ||
39 | ||
40 | AliHLTPHOSDataCorruptor::~AliHLTPHOSDataCorruptor() | |
41 | { | |
42 | delete fPulseGeneratorPtr; | |
43 | } | |
44 | ||
45 | ||
46 | /** | |
47 | * Takes as input good data from an altro and makes | |
48 | * bad data from it by flipping bits in individual samples, adding noise | |
49 | * add a double pulse.. etc | |
50 | * @param dataArray data that should be corrupted | |
51 | * @param N the number of samples in the array | |
52 | */ | |
53 | void | |
54 | AliHLTPHOSDataCorruptor::MakeCorruptedData(Double_t *dataArray, int N) | |
55 | { | |
56 | ||
57 | ||
58 | } | |
59 | ||
60 | ||
61 | void | |
62 | AliHLTPHOSDataCorruptor::MakeCorruptedDataTest(Double_t *dataArray, int N) | |
63 | { | |
64 | // double testPulse[300]; | |
65 | // dataArray[300]; | |
2f2c023b | 66 | int* quantisized = new int[N]; |
f809259d | 67 | |
68 | fPulseGeneratorPtr->SetSampleFreq(10); | |
69 | fPulseGeneratorPtr->SetAmplitude(100); | |
70 | fPulseGeneratorPtr->SetTZero(0); | |
71 | fPulseGeneratorPtr->MakePulse(dataArray, N); | |
72 | ||
73 | cout <<endl <<endl; | |
74 | cout << "AliHLTPHOSDataCorruptor::MakeCorruptedDataTest: printing data array before corruption" <<endl; | |
75 | ||
76 | for(int i=0; i< N; i++) | |
77 | { | |
78 | cout << dataArray[i] <<"\t"; | |
79 | quantisized[i] = (int)(dataArray[i]); | |
80 | } | |
81 | ||
82 | cout << endl; | |
83 | cout << "AliHLTPHOSDataCorruptor::MakeCorruptedDataTest: printing data after quantization" <<endl; | |
84 | ||
85 | for(int i=0; i< N; i++) | |
86 | { | |
87 | cout << quantisized[i] <<"\t"; | |
88 | } | |
89 | cout << endl; | |
90 | ||
91 | int bit = fRandomGeneratorPtr->Integer(10); | |
92 | ||
93 | cout << "AliHLTPHOSDataCorruptor::MakeCorruptedDataTest: printing data flipping sample 20, bit " << bit <<endl; | |
94 | ||
95 | FlipBit(&quantisized[10], bit); | |
96 | ||
97 | cout << endl; | |
98 | ||
99 | for(int i=0; i< N; i++) | |
100 | { | |
101 | cout << quantisized[i] <<"\t"; | |
102 | } | |
103 | cout << endl; | |
104 | cout << endl; | |
2f2c023b | 105 | delete [] quantisized; |
f809259d | 106 | } |
107 | ||
108 | ||
109 | /** | |
110 | *Flipping a single bit in a sample from 0 if it is one, and 1 if it | |
111 | *is zero. This emluates a situaion that can occur on the readout bus | |
112 | *if the rcu driver is not able to drive the bus because of to low | |
113 | *impedance. | |
114 | *@param sample The samle the should have the bit(s) flipped | |
115 | *@param n The number of bits to flip, the highest number is 10 (most significant) . | |
116 | */ | |
117 | void | |
118 | AliHLTPHOSDataCorruptor::FlipBit(int *sample, int n) | |
119 | { | |
120 | ||
121 | int mask = 1 << n; | |
122 | cout << "n = "<< n <<" mask = " << mask << endl; | |
123 | cout << "before flip"<< *sample << endl; | |
124 | *sample = *sample ^ mask; | |
125 | cout <<"after flip" << *sample <<endl; | |
126 | ||
127 | } |