panda3d/dtool/src/prc/nativeNumericData.I

// Filename: nativeNumericData.I
// Created by:  drose (09May01)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) Carnegie Mellon University.  All rights reserved.
//
// All use of this software is subject to the terms of the revised BSD
// license.  You should have received a copy of this license along
// with this source code in a file named "LICENSE."
//
////////////////////////////////////////////////////////////////////


////////////////////////////////////////////////////////////////////
//     Function: NativeNumericData::Constructor
//       Access: Public
//  Description: This constructor accepts the address of a numeric
//               variable, and its sizeof.
////////////////////////////////////////////////////////////////////
INLINE NativeNumericData::
NativeNumericData(const void *data, size_t) :
  _source(data)
{
}

////////////////////////////////////////////////////////////////////
//     Function: NativeNumericData::Constructor
//       Access: Public
//  Description: This constructor accepts a pointer to a data array
//               containing a packed numeric value, the offset within
//               the array at which the numeric value starts, and the
//               size of the numeric value.
//
//               It is essential that the array not be destructed or
//               modified as long as the NumericData object remains;
//               it may just store a pointer into that string's
//               internal buffer.
////////////////////////////////////////////////////////////////////
INLINE NativeNumericData::
NativeNumericData(const void *data, size_t start, size_t) {
  _source = (void *)((const char *)data + start);
}

////////////////////////////////////////////////////////////////////
//     Function: NativeNumericData::store_value
//       Access: Public
//  Description: Copies the data, with byte reversal if appropriate,
//               into the indicated numeric variable, whose address
//               and sizeof are given.
////////////////////////////////////////////////////////////////////
INLINE void NativeNumericData::
store_value(void *dest, size_t length) const {
  memcpy(dest, _source, length);
}

////////////////////////////////////////////////////////////////////
//     Function: NativeNumericData::get_data
//       Access: Public
//  Description: Returns the pointer to the first byte of the data,
//               either reversed or nonreversed, as appropriate.
////////////////////////////////////////////////////////////////////
INLINE const void *NativeNumericData::
get_data() const {
  return _source;
}

/////////////////////
// this is for a intel compile .. it is native format and it is 
// readable off word boundries
/////////////////////////
inline void TS_SetVal1(const PN_int8 * src, PN_int8 *dst)
{
  *dst = *src;
}
inline void TS_SetVal2(const char * src, char *dst)
{
  *(reinterpret_cast<PN_int16 *>(dst)) = *(reinterpret_cast  <const PN_int16 *>(src));
}

inline void TS_SetVal4(const char * src, char *dst)
{
  *(reinterpret_cast <PN_int32 *>(dst)) = *(reinterpret_cast <const PN_int32 *>(src));
}


inline void TS_SetVal8(const char * src, char *dst)
{
  *(reinterpret_cast<PN_int64 *>(dst)) = *(reinterpret_cast<const PN_int64 *>(src));
}

template<class type> inline type  TS_GetInteger(type &val,const  char * _src)
{ 
  val = *(reinterpret_cast <const type *>(_src));
  return val;
}

template<class type> inline type  TS_GetIntegerIncPtr(type &val,char *& _src)
{ 
  val = *(reinterpret_cast <const type *>(_src));
  _src+= sizeof(type);
  return val;
}

template<class type> inline void TS_AddIntegerIncPtr(type val, char *& _dst)
{
  *(reinterpret_cast <type *>(_dst)) = val;
  _dst+= sizeof(type);
}

template<class type> inline void TS_AddInteger(type val, char * _dst)
{
  *(reinterpret_cast <type *>(_dst)) = val;
}

#define TS_GetDirect(TT,SS)  *((TT *)(SS))  
#define TS_GetDirectIncPtr(TT,SS) {  _ptr += sizeof(TT); return *((TT *)(SS -sizeof(TT))); }