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31a920d3 | 1 | //#-*- Mode: c++ -*- |
2 | ||
3 | #ifndef ALIALTRODECODER_H | |
4 | #define ALIALTRODECODER_H | |
5 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
6 | * See cxx source for full Copyright notice */ | |
7 | ||
8 | #include <TObject.h> | |
9 | ||
10 | #define DDL_32BLOCK_SIZE 5 | |
11 | #define MAX_BRANCHES 2 | |
12 | #define MAX_FEE_PER_BRANCH 16 | |
13 | #define MAX_ALTROS_PER_FEE 8 | |
14 | #define CHANNELS_PER_ALTRO 16 | |
15 | #define MAX_SAMPLES_PER_CHANNEL 1024 | |
16 | #define ALTRO_TRAILER_SIZE 4 | |
17 | #define MAX_TRAILER_WORDS 3 | |
18 | ||
19 | class AliAltroData; | |
20 | ||
21 | class AliAltroDecoder: public TObject { | |
22 | public: | |
23 | ||
24 | /* | |
25 | *Default constructor | |
26 | **/ | |
27 | AliAltroDecoder(); | |
28 | ||
29 | /* | |
30 | *Default destructor | |
31 | **/ | |
32 | virtual ~AliAltroDecoder(); | |
33 | ||
34 | /* | |
35 | *Decode the RCU/DDL payload | |
36 | **/ | |
37 | Bool_t Decode(); | |
38 | ||
39 | /* | |
40 | *Reads the next altro channels | |
41 | **/ | |
42 | Bool_t NextChannel(AliAltroData *altroDataPtr); | |
43 | ||
44 | /* | |
45 | * DONT use ! | |
46 | * For debugging purphoses only, will be removed in near future | |
47 | **/ | |
48 | template<typename T> | |
49 | void DumpData(T *array, Int_t N, Int_t nPerLine) | |
50 | { | |
51 | cout << "DumpData N= " << N <<endl; | |
52 | for(Int_t i= 0; i< N; i++) | |
53 | { | |
54 | if((i%nPerLine == 0) && (i != 0)) | |
55 | { | |
56 | printf("\n"); | |
57 | } | |
58 | ||
59 | cout << array[i]<< "\t"; | |
60 | ||
61 | } | |
62 | } | |
63 | ||
64 | void SetMemory(UChar_t *dtaPtr, UInt_t size); | |
65 | ||
66 | void PrintInfo(AliAltroData &altrodata, Int_t n = 0, Int_t nPerLine = 4); | |
67 | ||
68 | /* | |
69 | *Prints to stdout the percent of altroblocks that | |
70 | *is missing the 2aaa trailer. | |
71 | **/ | |
72 | Float_t GetFailureRate(); | |
73 | ||
74 | private: | |
75 | ||
76 | AliAltroDecoder& operator = (const AliAltroDecoder& decoder); | |
77 | AliAltroDecoder(const AliAltroDecoder& decoder); | |
78 | ||
79 | /* | |
80 | *Check wether or not there is consistency between the number of 40 bit altro words given by | |
81 | *the RCU payload and the number of 40 bit words calculated from the size of the RCU payload. | |
82 | **/ | |
83 | Bool_t CheckPayloadTrailer(); | |
84 | ||
85 | /* | |
86 | *Decode one 160 bit DDL block into 16 x 16 bit integers (only least significant 10 bits are filled) | |
87 | **/ | |
88 | void DecodeDDLBlock(); | |
89 | ||
90 | /* | |
91 | *Decode one 160 bit DDL block into 16 integers. | |
92 | *In order to use the same decoding function (DecodeDDLBlock()) | |
93 | *a copy of the the last DDL block is made and | |
94 | *if the las block does not align with 160 bits then it is padded with zeroes | |
95 | **/ | |
96 | void DecodeLastDDLBlock(); | |
97 | ||
98 | /* | |
99 | *Use for simulated data only. | |
100 | *Patch for incorrectly simulated data. Counts the number of | |
101 | *2aaa word in the trailer of the payload and tries to figure out | |
102 | *the correct number of 40 bit altro words in the RCU pauload | |
103 | **/ | |
104 | Int_t countAAApaddings(); | |
105 | ||
106 | UInt_t *f32DtaPtr; // Pointer to dat of the input buffer in entities of 32 bit words (the RCU/DDL block) | |
107 | UChar_t *f8DtaPtr; // Pointer to dat of the input buffer in entities of 8 bit words (the RCU/DDL block) | |
108 | const Long_t fN32HeaderWords; // Number of 32 bit words in the common data header | |
109 | Int_t fN40AltroWords; // Number of 40 bit altro words contained in the RCU payload as calculated form the payload size | |
110 | Int_t fN40RcuAltroWords; // Number of 40 bit altro words contained in the RCU payload as given by the RCU trailer | |
111 | Int_t fNDDLBlocks; // Number of DDL blocks in the payload (the last blocj might/ight not be 160 bits ) | |
112 | Int_t f32LastDDLBlockSize; // Size of the last DDL block | |
113 | UInt_t fDDLBlockDummy[DDL_32BLOCK_SIZE]; // buffer to contain the las DDL block, if the block is not aligned with 160 bitm the remaining fileds are padded with zeroes | |
114 | UInt_t f32PayloadSize; // The size of the payload in entities of 32 bit words (after subtraction of the RCU header and the RCU trailer words) | |
115 | Long_t fOutBufferIndex; // current buffer position of the buffer for the decoded data (10 bit words represnted as int's) | |
116 | UInt_t fSize; // The size of the input RCU/DDL payload in entities of bytes, inluding the RCU header and trailer | |
117 | UInt_t fOutBuffer[MAX_FEE_PER_BRANCH*MAX_BRANCHES*MAX_ALTROS_PER_FEE*CHANNELS_PER_ALTRO*(MAX_SAMPLES_PER_CHANNEL + ALTRO_TRAILER_SIZE)]; // Buffer to hold the decoded data | |
118 | UInt_t fNAltro10bitWords; // The total number of 10 bit altro words in the RCU payload, including trailers (disregardin that the altro trialer is not aligned with 10 bit) | |
119 | Int_t fComplete; // Number of altro channels that is only partially read out (0x2aaa pattern missing in trailer) | |
120 | Int_t fInComplete; // Number of altro channels that is read out properly | |
121 | Bool_t fDecodeIfCorruptedTrailer; // Wether or not to try to decode the data if the RCU trailer is incorrect (will succseed in most cases) | |
122 | Bool_t fIsDecoded; // Wether or not the buffer set last by the "SetMemory()" function has been decoded | |
123 | ||
124 | ClassDef(AliAltroDecoder, 0) // class for decoding Altro payload | |
125 | }; | |
126 | ||
127 | #endif |