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1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer 3 // * License and Disclaimer *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. 9 // * include a list of copyright holders. *
10 // * 10 // * *
11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. *
17 // * 17 // * *
18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. *
24 // ******************************************* 24 // ********************************************************************
25 // 25 //
26 // 26 //
>> 27 // $Id: G4RTOutBitStream.cc,v 1.6 2008/04/04 13:52:48 allison Exp $
>> 28 // GEANT4 tag $Name: geant4-09-02 $
27 // 29 //
28 // 30 //
29 // 31 //
30 32
31 #include <string.h> 33 #include <string.h>
32 #include "G4RTJpeg.hh" 34 #include "G4RTJpeg.hh"
33 #include "G4RTOutBitStream.hh" 35 #include "G4RTOutBitStream.hh"
34 36
35 37
36 38
37 G4OutBitStream::G4OutBitStream(int size) 39 G4OutBitStream::G4OutBitStream(int size)
38 { 40 {
39 if(size < 1) 41 if(size < 1)
40 throw( G4MemoryError( size, "G4OutBitS 42 throw( G4MemoryError( size, "G4OutBitStream" ) );
41 43
42 mHeadOfBuf = mBuf = new u_char[size]; 44 mHeadOfBuf = mBuf = new u_char[size];
43 if( mHeadOfBuf == 0 ) 45 if( mHeadOfBuf == 0 )
44 throw( G4MemoryError( size, "G4OutBitS 46 throw( G4MemoryError( size, "G4OutBitStream" ) );
45 47
46 mEndOfBuf = mBuf + size; 48 mEndOfBuf = mBuf + size;
47 49
48 memset( mHeadOfBuf, 0, size ); 50 memset( mHeadOfBuf, 0, size );
49 51
50 mBitPos = 7; 52 mBitPos = 7;
51 mWriteFlag = 1; 53 mWriteFlag = 1;
52 } <<
53 <<
54 G4OutBitStream::~G4OutBitStream() <<
55 { <<
56 delete mBuf; <<
57 } 54 }
58 55
59 void 56 void
60 G4OutBitStream::IncBuf( void ) 57 G4OutBitStream::IncBuf( void )
61 { 58 {
62 if( ++mBuf >= mEndOfBuf ) 59 if( ++mBuf >= mEndOfBuf )
63 mWriteFlag = 0; 60 mWriteFlag = 0;
64 } 61 }
65 62
66 63
67 64
68 void 65 void
69 G4OutBitStream::SetBits(int v, int numBits) 66 G4OutBitStream::SetBits(int v, int numBits)
70 { 67 {
71 if( numBits == 0 ) 68 if( numBits == 0 )
72 return; 69 return;
73 if( numBits > 16 ) 70 if( numBits > 16 )
74 throw( G4BufferError( "SetBits:Max Bit 71 throw( G4BufferError( "SetBits:Max Bit Over" ) );
75 if( numBits > 8 ){ 72 if( numBits > 8 ){
76 Set8Bits( u_char(v>>8), numBits-8 ); 73 Set8Bits( u_char(v>>8), numBits-8 );
77 numBits = 8; 74 numBits = 8;
78 } 75 }
79 Set8Bits( u_char(v), numBits ); 76 Set8Bits( u_char(v), numBits );
80 } 77 }
81 78
82 void 79 void
83 G4OutBitStream::SetFewBits(u_char v, int numBi 80 G4OutBitStream::SetFewBits(u_char v, int numBits)
84 { 81 {
85 v &= BitFullMaskT[numBits-1]; 82 v &= BitFullMaskT[numBits-1];
86 *mBuf |= v << (mBitPos + 1 - numBits); 83 *mBuf |= v << (mBitPos + 1 - numBits);
87 if( (mBitPos -= numBits) < 0 ){ 84 if( (mBitPos -= numBits) < 0 ){
88 if( *mBuf == 0xff ){ 85 if( *mBuf == 0xff ){
89 IncBuf(); 86 IncBuf();
90 *mBuf = 0; 87 *mBuf = 0;
91 } 88 }
92 IncBuf(); 89 IncBuf();
93 mBitPos = 7; 90 mBitPos = 7;
94 } 91 }
95 } 92 }
96 93
97 void 94 void
98 G4OutBitStream::SetBits2Byte(u_char v, int num 95 G4OutBitStream::SetBits2Byte(u_char v, int numBits)
99 { 96 {
100 v &= BitFullMaskT[numBits-1]; 97 v &= BitFullMaskT[numBits-1];
101 int nextBits = numBits - (mBitPos + 1); 98 int nextBits = numBits - (mBitPos + 1);
102 *mBuf |= ( v >> nextBits ) & BitFullMaskT[mB 99 *mBuf |= ( v >> nextBits ) & BitFullMaskT[mBitPos];
103 if( *mBuf == 0xff ){ 100 if( *mBuf == 0xff ){
104 IncBuf(); 101 IncBuf();
105 *mBuf = 0; 102 *mBuf = 0;
106 } 103 }
107 IncBuf(); 104 IncBuf();
108 105
109 *mBuf = v << (8 - nextBits); 106 *mBuf = v << (8 - nextBits);
110 mBitPos = 7 - nextBits; 107 mBitPos = 7 - nextBits;
111 } 108 }
112 109
113 void 110 void
114 G4OutBitStream::Set8Bits(u_char v, int numBits 111 G4OutBitStream::Set8Bits(u_char v, int numBits)
115 { 112 {
116 if( mBitPos + 1 >= numBits ) 113 if( mBitPos + 1 >= numBits )
117 SetFewBits( (u_char)v, numBits ); 114 SetFewBits( (u_char)v, numBits );
118 else 115 else
119 SetBits2Byte( (u_char)v, numBits ); 116 SetBits2Byte( (u_char)v, numBits );
120 } 117 }
121 118
122 119
123 void 120 void
124 G4OutBitStream::FullBit( void ) 121 G4OutBitStream::FullBit( void )
125 { 122 {
126 if( mBitPos != 7 ) 123 if( mBitPos != 7 )
127 SetFewBits( BitFullMaskT[mBitPos], mBi 124 SetFewBits( BitFullMaskT[mBitPos], mBitPos+1 );
128 } 125 }
129 126
130 void 127 void
131 G4OutBitStream::SetByte(u_char dat) 128 G4OutBitStream::SetByte(u_char dat)
132 { 129 {
133 if( mWriteFlag ){ 130 if( mWriteFlag ){
134 FullBit(); 131 FullBit();
135 *mBuf = dat; 132 *mBuf = dat;
136 IncBuf(); 133 IncBuf();
137 return; 134 return;
138 } 135 }
139 throw( G4BufferError( "SetByte" ) ); 136 throw( G4BufferError( "SetByte" ) );
140 } 137 }
141 138
142 void 139 void
143 G4OutBitStream::SetWord(u_int dat) 140 G4OutBitStream::SetWord(u_int dat)
144 { 141 {
145 if( mWriteFlag ){ 142 if( mWriteFlag ){
146 FullBit(); 143 FullBit();
147 *mBuf = (dat >> 8) & 0xff; 144 *mBuf = (dat >> 8) & 0xff;
148 IncBuf(); 145 IncBuf();
149 *mBuf = dat & 0xff; 146 *mBuf = dat & 0xff;
150 IncBuf(); 147 IncBuf();
151 return; 148 return;
152 } 149 }
153 throw( G4BufferError( "SetWord" ) ); 150 throw( G4BufferError( "SetWord" ) );
154 } 151 }
155 152
156 void 153 void
157 G4OutBitStream::CopyByte(const char* src, int 154 G4OutBitStream::CopyByte(const char* src, int n)
158 { 155 {
159 if( mBuf+n < mEndOfBuf ){ 156 if( mBuf+n < mEndOfBuf ){
160 FullBit(); 157 FullBit();
161 memcpy( mBuf, src, n ); 158 memcpy( mBuf, src, n );
162 mBuf += n; 159 mBuf += n;
163 return; 160 return;
164 } 161 }
165 throw( G4BufferError( "CopyByte" ) ); 162 throw( G4BufferError( "CopyByte" ) );
166 } 163 }
167 164
168 165