- Reset TProcessID count after each event
[u/mrichter/AliRoot.git] / RAW / AliAltroDecoder.h
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31a920d3 1//#-*- Mode: c++ -*-
86525f0f 2// $Id$
31a920d3 3
4#ifndef ALIALTRODECODER_H
5#define ALIALTRODECODER_H
6/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
7 * See cxx source for full Copyright notice */
8
86525f0f 9/**
10 @file AliAltroDocoder.h
11 @author Per Thomas Hille, Oystein Djuvsland
12 @date
13 @brief High performance decoder class for the RCU/Altro data format
14*/
15
ac672c4c 16///////////////////////////////////////////////////////////////////////////////
17///
86525f0f 18/// This is the class for fast decoding of TPC/PHOS/EMCAL raw data
ac672c4c 19// see .cxx file for more detailed comments.
20///
21///////////////////////////////////////////////////////////////////////////////
22
23
24
31a920d3 25#include <TObject.h>
ac672c4c 26
27#include <iostream>
28using namespace std;
31a920d3 29
30#define DDL_32BLOCK_SIZE 5
31#define MAX_BRANCHES 2
32#define MAX_FEE_PER_BRANCH 16
33#define MAX_ALTROS_PER_FEE 8
34#define CHANNELS_PER_ALTRO 16
35#define MAX_SAMPLES_PER_CHANNEL 1024
36#define ALTRO_TRAILER_SIZE 4
37#define MAX_TRAILER_WORDS 3
38
39class AliAltroData;
40
41class AliAltroDecoder: public TObject {
42 public:
31a920d3 43 AliAltroDecoder();
31a920d3 44 virtual ~AliAltroDecoder();
31a920d3 45 Bool_t Decode();
31a920d3 46 Bool_t NextChannel(AliAltroData *altroDataPtr);
47
86525f0f 48 /**
49 * Copy the original 10/40 bit encecoded data of the current channel.
50 * The funtions copies the data to the end of the provided buffer.
51 * @param pBuffer target buffer
52 * @param bufferSize size of target buffer
53 * @return number of copied bytes, neg. error code if failed
54 */
55 Int_t CopyBackward(Byte_t* pBuffer, Int_t bufferSize);
56
31a920d3 57 /*
58 * DONT use !
59 * For debugging purphoses only, will be removed in near future
60 **/
61 template<typename T>
62 void DumpData(T *array, Int_t N, Int_t nPerLine)
63 {
64 cout << "DumpData N= " << N <<endl;
ac672c4c 65
31a920d3 66 for(Int_t i= 0; i< N; i++)
67 {
68 if((i%nPerLine == 0) && (i != 0))
69 {
70 printf("\n");
71 }
72
73 cout << array[i]<< "\t";
74
75 }
76 }
77
ebf7cafe 78 int SetMemory(UChar_t *dtaPtr, UInt_t size);
31a920d3 79 void PrintInfo(AliAltroData &altrodata, Int_t n = 0, Int_t nPerLine = 4);
31a920d3 80 Float_t GetFailureRate();
81
86525f0f 82 /**
83 * Provide a pointer to RCU trailer.
84 * The type of the parameter might not be optimal, but the function has
85 * been chosen that way to be similar to the counterpart in
86 * AliAltroRawStream.
87 * @return kTRUE if trailer available;
88 */
89 Bool_t GetRCUTrailerData(UChar_t*& data) const;
90
91 /**
92 * Provide size of RCU trailer.
93 */
94 Int_t GetRCUTrailerSize() const;
95
31a920d3 96 private:
97
98 AliAltroDecoder& operator = (const AliAltroDecoder& decoder);
99 AliAltroDecoder(const AliAltroDecoder& decoder);
ac672c4c 100 Bool_t CheckPayloadTrailer() const;
31a920d3 101 void DecodeDDLBlock();
31a920d3 102 void DecodeLastDDLBlock();
ac672c4c 103 Int_t CountAAApaddings() const;
31a920d3 104 UInt_t *f32DtaPtr; // Pointer to dat of the input buffer in entities of 32 bit words (the RCU/DDL block)
105 UChar_t *f8DtaPtr; // Pointer to dat of the input buffer in entities of 8 bit words (the RCU/DDL block)
ac672c4c 106 const Long_t fkN32HeaderWords; // Number of 32 bit words in the common data header
31a920d3 107 Int_t fN40AltroWords; // Number of 40 bit altro words contained in the RCU payload as calculated form the payload size
108 Int_t fN40RcuAltroWords; // Number of 40 bit altro words contained in the RCU payload as given by the RCU trailer
109 Int_t fNDDLBlocks; // Number of DDL blocks in the payload (the last blocj might/ight not be 160 bits )
110 Int_t f32LastDDLBlockSize; // Size of the last DDL block
111 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
86525f0f 112 UInt_t f8PayloadSize; // The size of the payload in bytes (after subtraction of the RCU header and the RCU trailer words)
31a920d3 113 Long_t fOutBufferIndex; // current buffer position of the buffer for the decoded data (10 bit words represnted as int's)
114 UInt_t fSize; // The size of the input RCU/DDL payload in entities of bytes, inluding the RCU header and trailer
115 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
116 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)
117 Int_t fComplete; // Number of altro channels that is only partially read out (0x2aaa pattern missing in trailer)
118 Int_t fInComplete; // Number of altro channels that is read out properly
119 Bool_t fDecodeIfCorruptedTrailer; // Wether or not to try to decode the data if the RCU trailer is incorrect (will succseed in most cases)
120 Bool_t fIsDecoded; // Wether or not the buffer set last by the "SetMemory()" function has been decoded
ac672c4c 121 Bool_t fIsFatalCorruptedTrailer; // If trailer is fataly corrupted, not possible in any way to recover, then it is not allowed to decode the DDL payload.
ebf7cafe 122
31a920d3 123 ClassDef(AliAltroDecoder, 0) // class for decoding Altro payload
124};
125
126#endif