source: drsdaq/RawDataCTX.h@ 1969

Last change on this file since 1969 was 85, checked in by ogrimm, 15 years ago
Small change in slow data format
File size: 3.4 KB
Line 
1/* Data organisation on disk:
2
3 Board 1 Board 2 ... Board 1 Board 2 ...
4 RH BS1 BS2 ... EH TC1 TC2 ... C1 C2 C3 ... C1 C2 C3 ... ... EH C1 C2 C3 ... C1 C2 C3 ... ...
5 -------------------------------- --------------------------------
6 Event 1 Event 2
7
8 RH Run header BSx Board structures EV Event header TCx Trigger cell of chip x (int)
9 Cx Channel (0-19 for 2 chips), Channel data are written as shorts, length of event data is in event header
10
11 Structures are defined using #pragma pack (1) to not include any padding. Note that
12 using the gcc attribute __attribute__((__packed__)) is incompatible with root.
13
14 The convention for the header structure is that exisitng structure entries
15 should never be deleted. New items may only be added at the end.
16*/
17
18#ifndef RAWDATACTX_H_SEEN
19#define RAWDATACTX_H_SEEN
20
21#include <stdio.h>
22#include <time.h>
23
24#define DATA_FORMAT 1
25#define IDENTIFICATION 1 // Raw data file identification
26
27typedef char I8;
28typedef int I32;
29typedef unsigned int U32;
30typedef float F32;
31
32#define MAGICNUM_OPEN 0xe0e1 // Magic number for run header while file open
33#define MAGICNUM_CLOSED 0xe0e0 // ... and when file is closed
34#define MAGICNUM_ERROR 0xe0e2 // ... and when an error occurred
35
36// Error codes
37enum CTX_ErrCode {CTX_OK, CTX_FOPEN, CTX_FCLOSE, CTX_NOTOPEN, CTX_RHEADER,
38 CTX_BSTRUCT, CTX_EHEADER, CTX_DATA, CTX_SEEK, CTX_EOF, CTX_VERSION};
39
40
41#pragma pack (1) // Switch padding off
42
43// Run header
44typedef struct {
45 U32 MagicNum;
46 U32 DataFormat; // Increasing whenever format changes
47
48 U32 RunHeaderSize;
49 U32 EventHeaderSize;
50 U32 BoardStructureSize;
51
52 I32 SoftwareRevision; // Subversion revision number (negative for modified working copy)
53
54 U32 Identification;
55 U32 Type; // Run type: 0=data, 1=pedestal, 3=test
56 U32 RunNumber;
57 U32 FileNumber;
58 I8 Description[100];
59
60 U32 NBoards; // Number of used mezzanine boards
61 U32 NChips; // Number of DRS chips per board
62 U32 NChannels; // Number of channels per chip
63
64 U32 Samples; // Number of samples
65 U32 Offset; // Offset from trigger
66
67 U32 Events; // Number of events in the file
68 U32 NBytes; // Bytes per sample
69
70 U32 StartSecond; // Opening and closing time of the file
71 U32 StartMicrosecond;
72 U32 EndSecond;
73 U32 EndMicrosecond;
74} RunHeader;
75
76// Board structure
77typedef struct {
78 I32 SerialNo; // Board serial number
79 F32 NomFreq; // Nominal sampling frequency [GHz]
80 F32 BoardTemp; // Board temperature [deg C]
81 F32 ScaleFactor; // Factor for conversion to mV
82} BoardStructure;
83
84// Event header
85typedef struct {
86 U32 EventNumber;
87 U32 Second; // Event time stamp (result of gettimeofday())
88 U32 Microsecond;
89 U32 TriggerType;
90 U32 EventSize; // Size of following data in bytes
91} EventHeader;
92
93#pragma pack () // Set default padding
94
95// Class definition
96class RawDataCTX {
97 FILE *Rawfile;
98 bool FileOpen;
99 bool Silent; // No textual output if true
100
101 public:
102 RunHeader *RHeader;
103 EventHeader *EHeader;
104 BoardStructure *BStruct;
105 char *Data;
106
107 RawDataCTX(bool = false);
108 ~RawDataCTX();
109
110 CTX_ErrCode OpenDataFile(char*, FILE* = NULL);
111 CTX_ErrCode CloseDataFile();
112 CTX_ErrCode ReadEvent(unsigned int = 0, FILE* = NULL);
113 bool IsFileOpen();
114};
115#endif
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