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5ca4e0a0 | 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 | // Interface to the Altro format | |
17 | // to read and write digits | |
18 | // To be used in Alice Data Challenges | |
19 | // and in the compression of the RAW data | |
20 | ||
21 | #include "AliAltroBufferV3.h" | |
22 | #include "AliRawDataHeaderSim.h" | |
23 | #include "AliLog.h" | |
24 | #include "AliFstream.h" | |
25 | ||
26 | ClassImp(AliAltroBufferV3) | |
27 | ||
28 | //_____________________________________________________________________________ | |
29 | AliAltroBufferV3::AliAltroBufferV3(const char* fileName, AliAltroMapping *mapping): | |
30 | AliAltroBuffer(fileName,mapping), | |
31 | fN(0) | |
32 | { | |
33 | // Constructor | |
93d2d7c4 | 34 | memset(fArray, 0, kMaxWords*sizeof(UShort_t)); |
5ca4e0a0 | 35 | } |
36 | ||
37 | //_____________________________________________________________________________ | |
38 | AliAltroBufferV3::~AliAltroBufferV3() | |
39 | { | |
40 | // destructor | |
5ca4e0a0 | 41 | } |
42 | ||
43 | //_____________________________________________________________________________ | |
44 | AliAltroBufferV3::AliAltroBufferV3(const AliAltroBufferV3& source): | |
45 | AliAltroBuffer(source), | |
46 | fN(source.fN) | |
47 | { | |
48 | // Copy Constructor | |
49 | ||
50 | Fatal("AliAltroBufferV3", "copy constructor not implemented"); | |
51 | } | |
52 | ||
53 | //_____________________________________________________________________________ | |
54 | AliAltroBufferV3& AliAltroBufferV3::operator = (const AliAltroBufferV3& /*source*/) | |
55 | { | |
56 | //Assigment operator | |
57 | ||
58 | Fatal("operator =", "assignment operator not implemented"); | |
59 | return *this; | |
60 | } | |
61 | ||
62 | //_____________________________________________________________________________ | |
63 | void AliAltroBufferV3::FillBuffer(Int_t val) | |
64 | { | |
65 | //Fills the Buffer with 16 ten bits words and write into a file | |
66 | ||
67 | if ((val > 0x3FF) || (val < 0)) { | |
68 | Error("FillBuffer", "Value out of range (10 bits): %d", val); | |
69 | val = 0x3FF; | |
70 | } | |
71 | ||
72 | if (fN >= (kMaxWords-1)) { | |
73 | Error("FillBuffer","Altro channel can't have more than 1024 10-bit words!"); | |
74 | return; | |
75 | } | |
76 | ||
77 | fArray[fN++] = val; | |
78 | } | |
79 | ||
80 | //_____________________________________________________________________________ | |
81 | void AliAltroBufferV3::WriteTrailer(Int_t wordsNumber, Short_t hwAddress) | |
82 | { | |
83 | //Writes a trailer (header) of 32 bits using | |
84 | //a given hardware adress | |
85 | UInt_t temp = hwAddress & 0xFFF; | |
69763d52 | 86 | temp |= ((wordsNumber & 0x3FF) << 16); |
aea0bb6b | 87 | temp |= (0x1U << 30); |
5ca4e0a0 | 88 | |
89 | fFile->WriteBuffer((char *)(&temp),sizeof(UInt_t)); | |
90 | ||
91 | ReverseAndWrite(); | |
92 | } | |
93 | ||
94 | //_____________________________________________________________________________ | |
95 | void AliAltroBufferV3::ReverseAndWrite() | |
96 | { | |
97 | // Reverse the altro data order and | |
98 | // write the buffer to the file | |
99 | UInt_t temp = 0; | |
100 | Int_t shift = 20; | |
69763d52 | 101 | for(Int_t i = (fN-1); i >= 0; i--) { |
5ca4e0a0 | 102 | temp |= (fArray[i] << shift); |
103 | shift -= 10; | |
104 | if (shift < 0) { | |
105 | fFile->WriteBuffer((char *)(&temp),sizeof(UInt_t)); | |
106 | temp = 0; | |
107 | shift = 20; | |
108 | } | |
109 | } | |
110 | ||
111 | if (shift != 20) { | |
112 | fFile->WriteBuffer((char *)(&temp),sizeof(UInt_t)); | |
113 | } | |
114 | ||
115 | fN = 0; | |
116 | } | |
117 | ||
118 | //_____________________________________________________________________________ | |
b73dbf18 | 119 | UChar_t AliAltroBufferV3::WriteRCUTrailer(Int_t rcuId) |
5ca4e0a0 | 120 | { |
121 | // Writes the RCU trailer | |
122 | // rcuId the is serial number of the corresponding | |
123 | // RCU. The basic format of the trailer can be | |
124 | // found in the RCU manual. | |
125 | // This method should be called at the end of | |
126 | // raw data writing. | |
127 | ||
128 | UInt_t currentFilePos = fFile->Tellp(); | |
129 | UInt_t size = currentFilePos-fDataHeaderPos; | |
130 | size -= sizeof(AliRawDataHeader); | |
b73dbf18 | 131 | size /= 4; |
5ca4e0a0 | 132 | |
b73dbf18 | 133 | if (size > 0x3FFFFFF) { |
134 | AliFatal(Form("The current raw data payload size of %d is bigger than the max possible one ! Can not write the RCU trailer !",size)); | |
135 | return 2; | |
5ca4e0a0 | 136 | } |
137 | ||
b73dbf18 | 138 | // Now add the the RCU trailer tag |
aea0bb6b | 139 | size |= (1U << 31); |
5ca4e0a0 | 140 | fFile->WriteBuffer((char *)(&size),sizeof(UInt_t)); |
141 | ||
b73dbf18 | 142 | // Now several well defined fields contained |
143 | // in the trailer | |
144 | // For details check the RCU manual | |
145 | UInt_t buffer; | |
146 | ||
aea0bb6b | 147 | buffer = (0x1U << 26); |
148 | buffer |= (0x1U << 31); | |
b73dbf18 | 149 | fFile->WriteBuffer((char *)(&buffer),sizeof(UInt_t)); |
150 | ||
aea0bb6b | 151 | buffer = (0x2U << 26); |
152 | buffer |= (0x1U << 31); | |
b73dbf18 | 153 | fFile->WriteBuffer((char *)(&buffer),sizeof(UInt_t)); |
154 | ||
aea0bb6b | 155 | buffer = (0x3U << 26); |
156 | buffer |= (0x1U << 31); | |
b73dbf18 | 157 | fFile->WriteBuffer((char *)(&buffer),sizeof(UInt_t)); |
158 | ||
159 | buffer = 0x3FFFFFF; | |
aea0bb6b | 160 | buffer |= (0x4U << 26); |
161 | buffer |= (0x1U << 31); | |
b73dbf18 | 162 | fFile->WriteBuffer((char *)(&buffer),sizeof(UInt_t)); |
163 | buffer = 0x3FFFFFF; | |
aea0bb6b | 164 | buffer |= (0x5U << 26); |
165 | buffer |= (0x1U << 31); | |
b73dbf18 | 166 | fFile->WriteBuffer((char *)(&buffer),sizeof(UInt_t)); |
167 | ||
aea0bb6b | 168 | buffer = (0x6U << 26); |
169 | buffer |= (0x1U << 31); | |
b73dbf18 | 170 | fFile->WriteBuffer((char *)(&buffer),sizeof(UInt_t)); |
171 | ||
aea0bb6b | 172 | buffer = (0x7U << 26); |
173 | buffer |= (0x1U << 31); | |
b73dbf18 | 174 | fFile->WriteBuffer((char *)(&buffer),sizeof(UInt_t)); |
5ca4e0a0 | 175 | |
176 | // Now the RCU identifier and size of the trailer | |
b73dbf18 | 177 | buffer = (9 & 0x7F); |
5ca4e0a0 | 178 | buffer |= ((rcuId & 0x1FF) << 7); |
aea0bb6b | 179 | buffer |= (0x2U << 16); |
180 | buffer |= (0x8U << 26); | |
181 | buffer |= (0x3U << 30); | |
5ca4e0a0 | 182 | fFile->WriteBuffer((char *)(&buffer),sizeof(UInt_t)); |
183 | ||
b73dbf18 | 184 | return 2; |
5ca4e0a0 | 185 | } |