Import Geant4 2.0.0 source tree

2016-06-08 15:42:07 +02:00
parent 103bda00c8
commit e7d7193284
3106 changed files with 171117 additions and 90550 deletions
@@ -0,0 +1,145 @@
+// This code implementation is the intellectual property of
+// the GEANT4 collaboration.
+//
+// By copying, distributing or modifying the Program (or any work
+// based on the Program) you indicate your acceptance of this statement,
+// and all its terms.
+//
+// $Id: G4RTOutBitStream.cc,v 1.3 2000/03/09 15:36:37 asaim Exp $
+// GEANT4 tag $Name: geant4-02-00 $
+//
+//
+//
+
+#include <string.h>
+#include "G4RTJpeg.hh"
+#include "G4RTOutBitStream.hh"
+
+
+
+G4OutBitStream::G4OutBitStream(int size)
+{
+  if(size < 1)
+        throw( G4MemoryError( size, "G4OutBitStream" ) );
+
+  mHeadOfBuf = mBuf = new u_char[size];
+  if( mHeadOfBuf == 0 )
+        throw( G4MemoryError( size, "G4OutBitStream" ) );
+
+  mEndOfBuf = mBuf + size;
+
+  memset( mHeadOfBuf, 0, size );
+
+  mBitPos = 7;
+  mWriteFlag = 1;
+}
+
+void
+G4OutBitStream::IncBuf( void )
+{
+  if( ++mBuf >= mEndOfBuf )
+        mWriteFlag = 0;
+}
+
+
+
+void
+G4OutBitStream::SetBits(int v, int numBits)
+{
+  if( numBits == 0 )
+        return;
+  if( numBits > 16 )
+        throw( G4BufferError( "SetBits:Max Bit Over" ) );
+  if( numBits > 8 ){
+        Set8Bits( u_char(v>>8), numBits-8 );
+        numBits = 8;
+  }
+  Set8Bits( u_char(v), numBits );
+}
+
+void
+G4OutBitStream::SetFewBits(u_char v, int numBits)
+{
+  v &= BitFullMaskT[numBits-1];
+  *mBuf |= v << (mBitPos + 1 - numBits);
+  if( (mBitPos -= numBits) < 0 ){
+        if( *mBuf == 0xff ){
+          IncBuf();
+          *mBuf = 0;
+        }
+        IncBuf();
+        mBitPos = 7;
+    }
+}
+
+void
+G4OutBitStream::SetBits2Byte(u_char v, int numBits)
+{
+  v &= BitFullMaskT[numBits-1];
+  int nextBits = numBits - (mBitPos + 1);
+  *mBuf |= ( v >> nextBits ) & BitFullMaskT[mBitPos];
+  if( *mBuf == 0xff ){
+        IncBuf();
+        *mBuf = 0;
+  }
+  IncBuf();
+
+  *mBuf = v << 8 - nextBits;
+  mBitPos = 7 - nextBits;
+}
+
+void
+G4OutBitStream::Set8Bits(u_char v, int numBits)
+{
+  if( mBitPos + 1 >= numBits )
+        SetFewBits( (u_char)v, numBits );
+ else
+        SetBits2Byte( (u_char)v, numBits );
+}
+
+
+void
+G4OutBitStream::FullBit( void )
+{
+  if( mBitPos != 7 )
+        SetFewBits( BitFullMaskT[mBitPos], mBitPos+1 );
+}
+
+void
+G4OutBitStream::SetByte(u_char dat)
+{
+  if( mWriteFlag ){
+        FullBit();
+        *mBuf = dat;
+        IncBuf();
+        return;
+  }
+  throw( G4BufferError( "SetByte" ) );
+}
+
+void
+G4OutBitStream::SetWord(u_int dat)
+{
+  if( mWriteFlag ){
+        FullBit();
+        *mBuf = (dat >> 8) & 0xff;
+        IncBuf();
+        *mBuf = dat & 0xff;
+        IncBuf();
+        return;
+  }
+  throw( G4BufferError( "SetWord" ) );
+}
+
+void
+G4OutBitStream::CopyByte(const char* src, int n)
+{
+  if( mBuf+n < mEndOfBuf ){
+        FullBit();
+        memcpy( mBuf, src, n );
+        mBuf += n;
+        return;
+  }
+  throw( G4BufferError( "CopyByte" ) );
+}
+