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C:/temp/src/j2k/nto/bak/Message.cpp

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#ifndef __J2K__Message_HPP__
#define __J2K__Message_HPP__

#include <j2k/Fred/Standard.hpp>

  // XOR checksum
  void Message::calculateCheckSum()
  {
    msg.checksum = ~0;

    for( size_t i = 0; i < size; i++ )
    {
      msg.checksum ^= ( msg.buffer[i] * ((i+1) & 65535 ) );
    }

    msg.checksum ^= msg.number;
  }

  Message::Message( void* buffer0, size_t size0, int number0 = 0 )
  {
    msg.buffer = new char[ size0+1 ];
    msg.size   = size0+1;
    msg.number = number0;
    memcpy( msg.buffer, buffer0, msg.size );
    calculateCheckSum();
  }

  Message::Message( int number0 = 0 )
  {
    msg.buffer = NULL;
    msg.size   = 0;
    msg.number = number0;
    calculateCheckSum();   
  }

  Message::Message( const Message& src )
  {
    msg.buffer = new char[ src.msg.size ];
    msg.size   = src.msg.size;
    msg.number = src.msg.number;
    memcpy( msg.buffer, src.msg.buffer, src.msg.size );
    calculateCheckSum();
  }

  const Message& Message::operator= ( const Message& src )
  {
    msg.buffer = new char[ src.msg.size ];
    msg.size   = src.msg.size;
    msg.number = src.msg.number;
    memcpy( msg.buffer, src.msg.buffer, src.msg.size );
    calculateCheckSum();
  }

  Message::~Message()
  {
    if ( msg.buffer != NULL )
    {
      delete[] msg.buffer;
    }
  }

#endif

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