| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer << 3 // * DISCLAIMER *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th << 5 // * The following disclaimer summarizes all the specific disclaimers *
6 // * the Geant4 Collaboration. It is provided << 6 // * of contributors to this software. The specific disclaimers,which *
7 // * conditions of the Geant4 Software License << 7 // * govern, are listed with their locations in: *
8 // * LICENSE and available at http://cern.ch/ << 8 // * http://cern.ch/geant4/license *
9 // * include a list of copyright holders. <<
10 // * 9 // * *
11 // * Neither the authors of this software syst 10 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing fin 11 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warran 12 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assum 13 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file << 14 // * use. *
16 // * for the full disclaimer and the limitatio <<
17 // * 15 // * *
18 // * This code implementation is the result << 16 // * This code implementation is the intellectual property of the *
19 // * technical work of the GEANT4 collaboratio << 17 // * GEANT4 collaboration. *
20 // * By using, copying, modifying or distri << 18 // * By copying, distributing or modifying the Program (or any work *
21 // * any work based on the software) you ag << 19 // * based on the Program) you indicate your acceptance of this *
22 // * use in resulting scientific publicati << 20 // * statement, and all its terms. *
23 // * acceptance of all terms of the Geant4 Sof <<
24 // ******************************************* 21 // ********************************************************************
25 // 22 //
26 // 23 //
>> 24 // $Id: G4RTOutBitStream.cc,v 1.4 2001/07/11 10:09:04 gunter Exp $
>> 25 // GEANT4 tag $Name: geant4-05-01-patch-01 $
27 // 26 //
28 // 27 //
29 // 28 //
30 29
31 #include <string.h> 30 #include <string.h>
32 #include "G4RTJpeg.hh" 31 #include "G4RTJpeg.hh"
33 #include "G4RTOutBitStream.hh" 32 #include "G4RTOutBitStream.hh"
34 33
35 34
36 35
37 G4OutBitStream::G4OutBitStream(int size) 36 G4OutBitStream::G4OutBitStream(int size)
38 { 37 {
39 if(size < 1) 38 if(size < 1)
40 throw( G4MemoryError( size, "G4OutBitS 39 throw( G4MemoryError( size, "G4OutBitStream" ) );
41 40
42 mHeadOfBuf = mBuf = new u_char[size]; 41 mHeadOfBuf = mBuf = new u_char[size];
43 if( mHeadOfBuf == 0 ) 42 if( mHeadOfBuf == 0 )
44 throw( G4MemoryError( size, "G4OutBitS 43 throw( G4MemoryError( size, "G4OutBitStream" ) );
45 44
46 mEndOfBuf = mBuf + size; 45 mEndOfBuf = mBuf + size;
47 46
48 memset( mHeadOfBuf, 0, size ); 47 memset( mHeadOfBuf, 0, size );
49 48
50 mBitPos = 7; 49 mBitPos = 7;
51 mWriteFlag = 1; 50 mWriteFlag = 1;
52 } 51 }
53 52
54 G4OutBitStream::~G4OutBitStream() <<
55 { <<
56 delete mBuf; <<
57 } <<
58 <<
59 void 53 void
60 G4OutBitStream::IncBuf( void ) 54 G4OutBitStream::IncBuf( void )
61 { 55 {
62 if( ++mBuf >= mEndOfBuf ) 56 if( ++mBuf >= mEndOfBuf )
63 mWriteFlag = 0; 57 mWriteFlag = 0;
64 } 58 }
65 59
66 60
67 61
68 void 62 void
69 G4OutBitStream::SetBits(int v, int numBits) 63 G4OutBitStream::SetBits(int v, int numBits)
70 { 64 {
71 if( numBits == 0 ) 65 if( numBits == 0 )
72 return; 66 return;
73 if( numBits > 16 ) 67 if( numBits > 16 )
74 throw( G4BufferError( "SetBits:Max Bit 68 throw( G4BufferError( "SetBits:Max Bit Over" ) );
75 if( numBits > 8 ){ 69 if( numBits > 8 ){
76 Set8Bits( u_char(v>>8), numBits-8 ); 70 Set8Bits( u_char(v>>8), numBits-8 );
77 numBits = 8; 71 numBits = 8;
78 } 72 }
79 Set8Bits( u_char(v), numBits ); 73 Set8Bits( u_char(v), numBits );
80 } 74 }
81 75
82 void 76 void
83 G4OutBitStream::SetFewBits(u_char v, int numBi 77 G4OutBitStream::SetFewBits(u_char v, int numBits)
84 { 78 {
85 v &= BitFullMaskT[numBits-1]; 79 v &= BitFullMaskT[numBits-1];
86 *mBuf |= v << (mBitPos + 1 - numBits); 80 *mBuf |= v << (mBitPos + 1 - numBits);
87 if( (mBitPos -= numBits) < 0 ){ 81 if( (mBitPos -= numBits) < 0 ){
88 if( *mBuf == 0xff ){ 82 if( *mBuf == 0xff ){
89 IncBuf(); 83 IncBuf();
90 *mBuf = 0; 84 *mBuf = 0;
91 } 85 }
92 IncBuf(); 86 IncBuf();
93 mBitPos = 7; 87 mBitPos = 7;
94 } 88 }
95 } 89 }
96 90
97 void 91 void
98 G4OutBitStream::SetBits2Byte(u_char v, int num 92 G4OutBitStream::SetBits2Byte(u_char v, int numBits)
99 { 93 {
100 v &= BitFullMaskT[numBits-1]; 94 v &= BitFullMaskT[numBits-1];
101 int nextBits = numBits - (mBitPos + 1); 95 int nextBits = numBits - (mBitPos + 1);
102 *mBuf |= ( v >> nextBits ) & BitFullMaskT[mB 96 *mBuf |= ( v >> nextBits ) & BitFullMaskT[mBitPos];
103 if( *mBuf == 0xff ){ 97 if( *mBuf == 0xff ){
104 IncBuf(); 98 IncBuf();
105 *mBuf = 0; 99 *mBuf = 0;
106 } 100 }
107 IncBuf(); 101 IncBuf();
108 102
109 *mBuf = v << (8 - nextBits); << 103 *mBuf = v << 8 - nextBits;
110 mBitPos = 7 - nextBits; 104 mBitPos = 7 - nextBits;
111 } 105 }
112 106
113 void 107 void
114 G4OutBitStream::Set8Bits(u_char v, int numBits 108 G4OutBitStream::Set8Bits(u_char v, int numBits)
115 { 109 {
116 if( mBitPos + 1 >= numBits ) 110 if( mBitPos + 1 >= numBits )
117 SetFewBits( (u_char)v, numBits ); 111 SetFewBits( (u_char)v, numBits );
118 else 112 else
119 SetBits2Byte( (u_char)v, numBits ); 113 SetBits2Byte( (u_char)v, numBits );
120 } 114 }
121 115
122 116
123 void 117 void
124 G4OutBitStream::FullBit( void ) 118 G4OutBitStream::FullBit( void )
125 { 119 {
126 if( mBitPos != 7 ) 120 if( mBitPos != 7 )
127 SetFewBits( BitFullMaskT[mBitPos], mBi 121 SetFewBits( BitFullMaskT[mBitPos], mBitPos+1 );
128 } 122 }
129 123
130 void 124 void
131 G4OutBitStream::SetByte(u_char dat) 125 G4OutBitStream::SetByte(u_char dat)
132 { 126 {
133 if( mWriteFlag ){ 127 if( mWriteFlag ){
134 FullBit(); 128 FullBit();
135 *mBuf = dat; 129 *mBuf = dat;
136 IncBuf(); 130 IncBuf();
137 return; 131 return;
138 } 132 }
139 throw( G4BufferError( "SetByte" ) ); 133 throw( G4BufferError( "SetByte" ) );
140 } 134 }
141 135
142 void 136 void
143 G4OutBitStream::SetWord(u_int dat) 137 G4OutBitStream::SetWord(u_int dat)
144 { 138 {
145 if( mWriteFlag ){ 139 if( mWriteFlag ){
146 FullBit(); 140 FullBit();
147 *mBuf = (dat >> 8) & 0xff; 141 *mBuf = (dat >> 8) & 0xff;
148 IncBuf(); 142 IncBuf();
149 *mBuf = dat & 0xff; 143 *mBuf = dat & 0xff;
150 IncBuf(); 144 IncBuf();
151 return; 145 return;
152 } 146 }
153 throw( G4BufferError( "SetWord" ) ); 147 throw( G4BufferError( "SetWord" ) );
154 } 148 }
155 149
156 void 150 void
157 G4OutBitStream::CopyByte(const char* src, int 151 G4OutBitStream::CopyByte(const char* src, int n)
158 { 152 {
159 if( mBuf+n < mEndOfBuf ){ 153 if( mBuf+n < mEndOfBuf ){
160 FullBit(); 154 FullBit();
161 memcpy( mBuf, src, n ); 155 memcpy( mBuf, src, n );
162 mBuf += n; 156 mBuf += n;
163 return; 157 return;
164 } 158 }
165 throw( G4BufferError( "CopyByte" ) ); 159 throw( G4BufferError( "CopyByte" ) );
166 } 160 }
167 161
168 162