/*
   Copyright (C) 1998-2003 T. Scott Dattalo

This file is part of gpsim.

gpsim is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

gpsim is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with gpsim; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */


#include "bytelog.h"


namespace gpsim {

  ByteLogger::ByteLogger(int _bufsize) 
    : bufsize(_bufsize)
  {
    index = 0;
    buffer = (TimedByte *) new char[bufsize * sizeof(TimedByte)];

  }

  int ByteLogger::modIndex(int i)
  {
    if(i<0) {
      i+=bufsize;
      if(i<0)
        return index;
    } else  if(i>=bufsize)
      return index;

    return i;
  }


  void ByteLogger::start(unsigned long long t)
  {
    buffer[index].start = t;
  }
  void ByteLogger::stop(unsigned long long t) 
  {
    buffer[index].stop = t;

    if(++index > bufsize)
      index  = 0;
  }
  void ByteLogger::byte(unsigned int b) 
  {
    buffer[index].b = b&0xff;
  }
  void ByteLogger::rts(unsigned long long r) 
  {
    buffer[index].rts = r;
  }
  /*
    void ByteLogger::statistics(int i=-1)
    {
    i = modIndex(i+index);

    unsigned long long t = (buffer[i].stop-buffer[i].start);
    double td= t/2.0;

    cout << "0x" << hex << buffer[i].b 
    << " start time: 0x" << buffer[i].start
    << " byte time: 0x" << t << " cycles = "
    << td  << " uS\n";
    }
  */
  unsigned long long ByteLogger::getStart(int i)
  {

    return buffer[modIndex(i+index)].start;
  }

  void ByteLogger::get(int i, TimedByte &b)
  {

    b = buffer[modIndex(i+index)];
  }

} // end of namespace gpsim