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buffer.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file buffer.cc
1
#include "
buffer.h
"
2
#include "
gzbuffer.h
"
3
#include "
lzobuffer.h
"
4
#include "
prdfBuffer.h
"
5
#include "
oncsBuffer.h
"
6
7
8
buffer::buffer
()
9
{
10
11
}
12
13
14
buffer::~buffer
()
15
{}
16
17
18
int
buffer::makeBuffer
(
PHDWORD
*
bp
,
const
int
allocatedsize,
buffer
**bptr)
19
{
20
if
( bp[1]==
GZBUFFERMARKER
||
buffer::u4swap
(bp[1])==
GZBUFFERMARKER
)
21
{
22
*bptr =
new
gzbuffer
(bp, allocatedsize );
23
return
0;
24
}
25
26
else
if
( bp[1]==
LZO1XBUFFERMARKER
||
buffer::u4swap
(bp[1])==
LZO1XBUFFERMARKER
)
27
{
28
*bptr =
new
lzobuffer
( bp, allocatedsize );
29
return
0;
30
}
31
32
else
if
( bp[1]==
ONCSBUFFERMARKER
||
buffer::u4swap
(bp[1])==
ONCSBUFFERMARKER
)
33
{
34
*bptr =
new
oncsBuffer
( bp, allocatedsize );
35
return
0;
36
}
37
38
else
if
( bp[1]==
BUFFERMARKER
||
buffer::u4swap
(bp[1])==
BUFFERMARKER
)
39
{
40
*bptr =
new
prdfBuffer
( bp, allocatedsize );
41
return
0;
42
}
43
44
*bptr = 0;
45
return
-1;
46
}
47
48
49
50
// ---------------------------------------------------------
51
int
buffer::i4swap
(
const
int
in
)
52
{
53
union
54
{
55
int
i4;
56
char
c
[4];
57
} i,o;
58
59
i.i4 =
in
;
60
o.c[0] = i.c[3];
61
o.c[1] = i.c[2];
62
o.c[2] = i.c[1];
63
o.c[3] = i.c[0];
64
return
o.i4;
65
}
66
67
// ---------------------------------------------------------
68
unsigned
int
buffer::u4swap
(
const
unsigned
int
in
)
69
{
70
union
71
{
72
unsigned
int
i4;
73
char
c
[4];
74
} i,o;
75
76
i.i4 =
in
;
77
o.c[0] = i.c[3];
78
o.c[1] = i.c[2];
79
o.c[2] = i.c[1];
80
o.c[3] = i.c[0];
81
return
o.i4;
82
}
83
84
85
// ---------------------------------------------------------
86
int
buffer::i22swap
(
const
int
in
)
87
{
88
union
89
{
90
int
i4;
91
char
c
[4];
92
} i,o;
93
94
i.i4 =
in
;
95
o.c[0] = i.c[1];
96
o.c[1] = i.c[0];
97
o.c[2] = i.c[3];
98
o.c[3] = i.c[2];
99
return
o.i4;
100
}
101
102
// ---------------------------------------------------------
103
short
buffer::i2swap
(
const
short
in
)
104
{
105
union
106
{
107
short
i2;
108
char
c
[2];
109
} i,o;
110
111
i.i2 =
in
;
112
o.c[0] = i.c[1];
113
o.c[1] = i.c[0];
114
115
return
o.i2;
116
}
117
118
online_distribution
blob
master
newbasic
buffer.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:58
using
1.8.2 with
ECCE GitHub integration