source: drsdaq/RawDataCTX.h@ 40

Last change on this file since 40 was 36, checked in by ogrimm, 16 years ago
Various changes, see History.txt
File size: 3.2 KB
Line 
1/* Data organisation on disk:
2
3 Board 1 Board 2 ... Board 1 Board 2 ...
4 RH BS1 BS2 ... EH 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 Cx Channel (0-19 for 2 chips)
9 Channel data are written as shorts, lenght of channel data is in the run 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
15#ifndef RAWDATACTX_H_SEEN
16#define RAWDATACTX_H_SEEN
17
18#include <stdio.h>
19
20#define DATA_FORMAT 1
21
22typedef char I8;
23typedef unsigned char U8;
24typedef short I16;
25typedef unsigned short U16;
26typedef int I32;
27typedef unsigned int U32;
28typedef float F32;
29
30#define MAGICNUM_OPEN 0xe0e1 // Magic number for run header while file open
31#define MAGICNUM_CLOSED 0xe0e0 // ... and when file is closed
32#define MAGICNUM_ERROR 0xe0e2 // ... and when an error occurred
33
34// Error codes
35enum CTX_ErrCode {CTX_OK, CTX_FOPEN, CTX_FCLOSE, CTX_NOTOPEN, CTX_RHEADER,
36 CTX_BSTRUCT, CTX_EHEADER, CTX_DATA, CTX_SEEK, CTX_EOF};
37
38#pragma pack (1) // Switch padding off
39
40// Run header
41typedef struct {
42 U32 MagicNum;
43 U32 DataFormat; // Increasing whenever header format changes
44
45 U32 RunHeaderSize;
46 U32 EventHeaderSize;
47 U32 BoardStructureSize;
48
49 I8 DAQVersion[12]; // contains result of __DATE__ macro
50
51 I8 Source[16];
52 I8 Type; // run type (char): pedestal, data, ...
53
54 U32 RunNumber;
55 U32 FileNumber;
56
57 U32 StartYear;
58 U32 StartMonth;
59 U32 StartDay;
60 U32 StartHour;
61 U32 StartMinute;
62 U32 StartSecond;
63
64 U32 EndYear;
65 U32 EndMonth;
66 U32 EndDay;
67 U32 EndHour;
68 U32 EndMinute;
69 U32 EndSecond;
70
71 F32 SourceRA;
72 F32 SourceDEC;
73 F32 TelescopeRA;
74 F32 TelescopeDEC;
75
76 U32 Events; // Number of events in the file
77 U32 NCMCBoards; // Number of used boards
78 U32 NChips; // Number of DRS chips per board
79 U32 NChannels; // Number of channels per chip
80 U32 Samples; // Number of samples
81 I32 Offset; // Offset from first sample
82} RunHeader;
83
84// Board structure
85typedef struct {
86 I32 SerialNo; // Board serial number
87 F32 NomFreq; // Nominal sampling frequency [GHz]
88 F32 BoardTemp; // Board temperature [deg C]
89 F32 ScaleFactor; // Factor for conversion to mV
90} BoardStructure;
91
92// Event header
93typedef struct {
94 I8 Name[5]; // "EVTH", NULL-terminated
95 U32 EventNumber;
96 F32 TimeSec; // event time stamp in seconds, ms precision
97 U16 TriggerType;
98} EventHeader;
99
100#pragma pack () // Set default padding
101
102// Class definition
103class RawDataCTX {
104 FILE *Rawfile;
105 bool FileOpen;
106 bool Silent;
107
108 public:
109 RunHeader *RHeader;
110 EventHeader *EHeader;
111 BoardStructure *BStruct;
112 short *Data;
113
114 RawDataCTX(bool = false);
115 ~RawDataCTX();
116
117 CTX_ErrCode OpenDataFile(char*, FILE* = NULL);
118 CTX_ErrCode CloseDataFile();
119 CTX_ErrCode ReadEvent(int = 0, FILE* = NULL);
120 bool IsFileOpen();
121};
122#endif
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