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a6e7b125 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /////////////////////////////////////////////////////////////////////////////// | |
17 | // | |
8de97894 | 18 | // This is the base class for reading raw data and providing |
a6e7b125 | 19 | // information about digits |
20 | // | |
21 | /////////////////////////////////////////////////////////////////////////////// | |
22 | ||
23 | #include "AliRawReader.h" | |
24 | ||
8de97894 | 25 | |
a6e7b125 | 26 | ClassImp(AliRawReader) |
27 | ||
28 | ||
8de97894 | 29 | AliRawReader::AliRawReader() |
a6e7b125 | 30 | { |
8de97894 | 31 | fMiniHeader = NULL; |
a6e7b125 | 32 | fCount = 0; |
8de97894 | 33 | |
34 | fSelectDetectorID = -1; | |
35 | fSelectMinDDLID = -1; | |
36 | fSelectMaxDDLID = -1; | |
a6e7b125 | 37 | } |
38 | ||
8de97894 | 39 | |
40 | void AliRawReader::Select(Int_t detectorID, Int_t minDDLID, Int_t maxDDLID) | |
a6e7b125 | 41 | { |
8de97894 | 42 | // read only data of the detector with the given ID and in the given |
43 | // range of DDLs (minDDLID <= DDLID < maxDDLID). | |
44 | // no selection is applied if a value < 0 is used. | |
a6e7b125 | 45 | |
8de97894 | 46 | fSelectDetectorID = detectorID; |
47 | fSelectMinDDLID = minDDLID; | |
48 | fSelectMaxDDLID = maxDDLID; | |
49 | } | |
a6e7b125 | 50 | |
8de97894 | 51 | Bool_t AliRawReader::IsSelected() |
a6e7b125 | 52 | { |
8de97894 | 53 | // apply the selection (if any) |
54 | ||
55 | if (fSelectDetectorID >= 0) { | |
56 | if (fMiniHeader->fDetectorID != fSelectDetectorID) return kFALSE; | |
57 | if ((fSelectMinDDLID >= 0) && (fMiniHeader->fDDLID < fSelectMinDDLID)) | |
58 | return kFALSE; | |
59 | if ((fSelectMaxDDLID >= 0) && (fMiniHeader->fDDLID >= fSelectMaxDDLID)) | |
60 | return kFALSE; | |
a6e7b125 | 61 | } |
8de97894 | 62 | return kTRUE; |
a6e7b125 | 63 | } |
64 | ||
65 | ||
8de97894 | 66 | Bool_t AliRawReader::CheckMiniHeader() |
a6e7b125 | 67 | { |
8de97894 | 68 | // check the magic number of the mini header |
a6e7b125 | 69 | |
8de97894 | 70 | if ((fMiniHeader->fMagicWord[2] != 0x12) || |
71 | (fMiniHeader->fMagicWord[1] != 0x34) || | |
72 | (fMiniHeader->fMagicWord[0] != 0x56)) { | |
73 | Error("CheckMiniHeader", "wrong magic word!"); | |
74 | return kFALSE; | |
a6e7b125 | 75 | } |
a6e7b125 | 76 | return kTRUE; |
77 | } | |
78 | ||
79 | Bool_t AliRawReader::ReadNextInt(UInt_t& data) | |
80 | { | |
8de97894 | 81 | // reads the next 4 bytes at the current position |
82 | // returns kFALSE if the data could not be read | |
a6e7b125 | 83 | |
84 | while (fCount == 0) { | |
85 | if (!ReadMiniHeader()) return kFALSE; | |
86 | } | |
8de97894 | 87 | if (fCount < (Int_t) sizeof(data)) { |
88 | Error("ReadNextInt", | |
89 | "too few data left (%d bytes) to read an UInt_t!", fCount); | |
90 | return kFALSE; | |
91 | } | |
92 | if (!ReadNext((UChar_t*) &data, sizeof(data))) { | |
a6e7b125 | 93 | Error("ReadNextInt", "could not read data!"); |
94 | return kFALSE; | |
95 | } | |
a6e7b125 | 96 | return kTRUE; |
97 | } | |
98 | ||
99 | Bool_t AliRawReader::ReadNextShort(UShort_t& data) | |
100 | { | |
8de97894 | 101 | // reads the next 2 bytes at the current position |
102 | // returns kFALSE if the data could not be read | |
a6e7b125 | 103 | |
104 | while (fCount == 0) { | |
105 | if (!ReadMiniHeader()) return kFALSE; | |
106 | } | |
8de97894 | 107 | if (fCount < (Int_t) sizeof(data)) { |
108 | Error("ReadNextShort", | |
109 | "too few data left (%d bytes) to read an UShort_t!", fCount); | |
110 | return kFALSE; | |
111 | } | |
112 | if (!ReadNext((UChar_t*) &data, sizeof(data))) { | |
a6e7b125 | 113 | Error("ReadNextShort", "could not read data!"); |
114 | return kFALSE; | |
115 | } | |
a6e7b125 | 116 | return kTRUE; |
117 | } | |
118 | ||
119 | Bool_t AliRawReader::ReadNextChar(UChar_t& data) | |
120 | { | |
121 | // reads the next 1 byte at the current stream position | |
8de97894 | 122 | // returns kFALSE if the data could not be read |
a6e7b125 | 123 | |
124 | while (fCount == 0) { | |
125 | if (!ReadMiniHeader()) return kFALSE; | |
126 | } | |
8de97894 | 127 | if (!ReadNext((UChar_t*) &data, sizeof(data))) { |
a6e7b125 | 128 | Error("ReadNextChar", "could not read data!"); |
129 | return kFALSE; | |
130 | } | |
a6e7b125 | 131 | return kTRUE; |
132 | } | |
133 |