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2e9f335b | 1 | /* Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. * |
2 | * See cxx source for full Copyright notice */ | |
3 | ||
4 | ///////////////////////////////////////////////////// | |
5 | // Class used for read-write the ALTRO data format // | |
6 | ///////////////////////////////////////////////////// | |
7 | ||
8 | /*This class is an interface between the altro format file and the | |
9 | user, and can be used in write or read mode | |
10 | In the write mode a new altro file is created and filled using the method FillBuffer(). | |
11 | The name of the file is specified as parameter in the constructor as well as the type mode. | |
12 | In the Read mode the specified file is open and the values can be read using the | |
13 | methods GetNext() and GetNextBackWord(). | |
14 | The first method is used to read the file forward while the second is used to read backward | |
15 | */ | |
16 | ||
17 | #ifndef AliTPCBUFFER160_H | |
18 | #define AliTPCBUFFER160_H | |
19 | ||
20 | class AliTPCBuffer160:public TObject{ | |
21 | public: | |
22 | AliTPCBuffer160(){}//default constructor | |
23 | AliTPCBuffer160(const char* fileName,Int_t flag);//constructor | |
24 | virtual ~AliTPCBuffer160();//destructor | |
25 | AliTPCBuffer160(const AliTPCBuffer160 &source); // copy constructor | |
26 | AliTPCBuffer160& operator=(const AliTPCBuffer160 &source); // ass. op. | |
27 | void FillBuffer(Int_t Val); | |
28 | //this method returmn the number of free cells of the internal buffer | |
29 | Int_t GetFreeCellNumber()const{return fFreeCellBuffer;} | |
30 | //this method return the next word of 10 bit (reading the file backward) if it exists -1 otherwise | |
31 | Int_t GetNextBackWord(); | |
32 | //this method return the next word of 10 bit (reading the file forward) if it exists -1 otherwise | |
33 | Int_t GetNext(); | |
34 | //this method is used to write tha trailer | |
35 | void WriteTrailer(Int_t WordsNumber,Int_t PadNumber,Int_t RowNumber,Int_t SecNumber); | |
36 | //this method is used to read the trailer when the file is read forward | |
37 | void ReadTrailer(Int_t &WordsNumber,Int_t &PadNumber,Int_t &RowNumber,Int_t &SecNumber); | |
38 | //this method is used to read the trailer when the file is read backward | |
39 | Int_t ReadTrailerBackward(Int_t &WordsNumber,Int_t &PadNumber,Int_t &RowNumber,Int_t &SecNumber); | |
40 | //this methos is used to write the Mini header | |
41 | void WriteMiniHeader(ULong_t Size,Int_t SecNumber,Int_t SubSector,Int_t Detector,Int_t Flag ); | |
42 | //this methos is used to set the verbose level | |
43 | //level 0 no output messages | |
44 | //level !=0 some messages are displayed during the run | |
45 | void SetVerbose(Int_t val){fVerbose=val;} | |
46 | //this method is used to fill the buffer with 2AA hexadecimal value and save it into the output file | |
47 | void Flush(); | |
48 | Int_t GetFillWordsNum(){return EndingFillWords;} | |
49 | private: | |
50 | //this method is used to pack bits into a word of 32 bits | |
51 | void PackWord(ULong_t &BaseWord, ULong_t Word, Int_t StartBit, Int_t StopBit); | |
52 | //this method is used to read a precise number of bits from a word of 32 bits | |
53 | void UnpackWord(ULong_t PackedWord, Int_t StartBit, Int_t StopBit, ULong_t &Word); | |
54 | ||
55 | ULong_t fBuffer[5]; //Buffer dimension is 32*5=160 bits and it contains 16 values | |
56 | //A value is never splitted in two Buffer | |
57 | ||
58 | ||
59 | Int_t fShift; //This variable contains the number of free bits in the current cel of | |
60 | //the Buffer after that the value Val is been inserted. | |
61 | //size of Int_t is 32 bit that is the same size of a cell of Buffer so | |
62 | //the shift operation are perfomend only on value Val. | |
63 | Int_t fCurrentCell; //This variable contains the cell number of the cell currently used | |
64 | Int_t fFreeCellBuffer;//number of free cells of the buffer | |
65 | Int_t fFlag; //0 read 1 write | |
66 | Int_t fVerbose; //verbose level | |
67 | fstream f; //logical name of the I/O file | |
68 | Int_t fMaskBackward; | |
69 | ULong_t fFilePosition;//'pointer' to the actual position in the file | |
70 | ULong_t fFileEnd; //position of the last element of the file (File dimension) | |
71 | ULong_t fMiniHeaderPos;//Mini header position | |
72 | Int_t EndingFillWords; | |
73 | ClassDef(AliTPCBuffer160,1) | |
74 | }; | |
75 | ||
76 | #endif |