Array3.h

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/*
   For more information, please see: http://software.sci.utah.edu

   The MIT License

   Copyright (c) 2009 Scientific Computing and Imaging Institute,
   University of Utah.

   
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///
///@file   Array3.h 
///@brief  Interface to dynamic 3D array class
///
///@author Steven G. Parker
///        Department of Computer Science
///        University of Utah
///@date   March 1994
///

#ifndef CORE_CONAINTERS_ARRAY3_H
#define CORE_CONAINTERS_ARRAY3_H 1

#include <boost/multi_array.hpp>

#ifdef SCIRUN4_CODE_TO_BE_ENABLED_LATER
#include <sci_defs/bits_defs.h>
#include <iostream>
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#endif

#include <Core/Persistent/Persistent.h>


#include <Core/Utils/Legacy/Assert.h>

namespace SCIRun {

template<class T> 
class Array3 
{
public:
  typedef boost::multi_array<T, 3> impl_type;
  typedef T value_type;

  Array3() {}

  Array3(size_t size1, size_t size2, size_t size3) 
  {
    resize(size1, size2, size3);
  }

  void resize(size_t size1, size_t size2, size_t size3)
  {
    typename impl_type::extent_gen extents;
    impl_.resize(extents[size1][size2][size3]);
  }

  size_t size() const
  {
    return dim1() * dim2() * dim3();
  }

  T& operator[](size_t idx)
  {
    return impl_.origin()[idx];
  }

  const T& operator[](size_t idx) const
  {
    return impl_.origin()[idx];
  }

  const T& operator()(size_t i1, size_t i2, size_t i3) const
  {
    return impl_[i1][i2][i3];
  }

  T& operator()(size_t i1, size_t i2, size_t i3) 
  {
    return impl_[i1][i2][i3];
  }

  inline size_t dim1() const {return impl_.shape()[0];}
  inline size_t dim2() const {return impl_.shape()[1];}
  inline size_t dim3() const {return impl_.shape()[2];}

private:
  impl_type impl_;
};

template<class T> void Pio(Piostream& stream, Array3<T>& array);
template<class T> void Pio(Piostream& stream, Array3<T>& array, const std::string&);
template<class T> void Pio(Piostream& stream, Array3<T>*& array);

#define ARRAY3_VERSION 2

template<class T>
void
Pio(Piostream& stream, Array3<T>& data)
{
  int version=stream.begin_class("Array3", ARRAY3_VERSION);

  if(stream.reading())
  {
    if (version < 2)
    {
      // Allocate the array
      int d1, d2, d3;
      Pio(stream, d1);
      Pio(stream, d2);
      Pio(stream, d3);
      data.resize(d1, d2, d3);      
    }
    else
    {
      // Allocate the array
      long long d1, d2, d3;
      Pio(stream, d1);
      Pio(stream, d2);
      Pio(stream, d3);
      data.resize(static_cast<size_type>(d1), 
                  static_cast<size_type>(d2),
                  static_cast<size_type>(d3));            
    }
  }
  else 
  {
    long long d1, d2, d3;
    d1 = static_cast<long long>(data.dim1());
    d2 = static_cast<long long>(data.dim2());
    d3 = static_cast<long long>(data.dim3());
    Pio(stream, d1);
    Pio(stream, d2);
    Pio(stream, d3);
  }
  
  if (stream.supports_block_io())
  {
    stream.block_io(reinterpret_cast<void*>(&data[0]), sizeof(T), data.size());
  }
  else
  {
    for(size_t i=0;i<data.dim1();i++)
    {
      for(size_t j=0;j<data.dim2();j++)
      {
        for(size_t k=0;k<data.dim3();k++)
        {
          Pio(stream, data(i,j,k));
        }
      }
    }
  }
  stream.end_class();
}


template<class T>
void
Pio(Piostream& stream, Array3<T>*& data) 
{
  if (stream.reading()) 
  {
    data= new Array3<T>;
  }
  Pio(stream, *data);
}


template<class T>
void
Pio( Piostream& stream, Array3<T>& data, 
     const std::string& filename )
{
  int version=stream.begin_class("Array3", ARRAY3_VERSION);

  if(stream.reading())
  {
    if (version < 2)
    {
      // Allocate the array
      int d1, d2, d3;
      Pio(stream, d1);
      Pio(stream, d2);
      Pio(stream, d3);
      data.resize(d1, d2, d3);
      data.input( filename );
    }
    else
    {
      // Allocate the array
      long long d1, d2, d3;
      Pio(stream, d1);
      Pio(stream, d2);
      Pio(stream, d3);
      data.resize(static_cast<size_type>(d1), 
                  static_cast<size_type>(d2),
                  static_cast<size_type>(d3));
      data.input( filename );
    }
  }
  else 
  {
    long long d1, d2, d3;
    d1 = static_cast<long long>(data.dm1);
    d2 = static_cast<long long>(data.dm2);
    d3 = static_cast<long long>(data.dm3);
    Pio(stream, d1);
    Pio(stream, d2);
    Pio(stream, d3);
    data.output( filename );
  }
    
  stream.end_class();
}
#if 0
template<class T>
int
Array3<T>::input( const std::string &filename ) 
{
  std::cerr << "Array3: Split input\n";

  // get raw data
  int file=open( filename.c_str(), O_RDONLY, 0666);
  if ( file == -1 ) {
    printf("can not open file %s\n", filename.c_str());
    return 0;
  }
  
  int maxiosz=1024*1024;
  size_type size = dm1*dm2*dm3*sizeof(T);
  int n = int(size / maxiosz);
  char *p = reinterpret_cast<char *>(objs[0][0]);

  for ( ; n> 0 ; n--, p+= maxiosz) 
  {
    int i = read( file, p, maxiosz);
    if ( i != maxiosz ) 
      perror( "io read ");
  }
  int i =  read( file, p, size % maxiosz);
  if ( i != (size % maxiosz) ) 
    perror("on last io");
        
  fsync(file);
  close(file);

  return 1;
}

template<class T>
int
Array3<T>::output( const std::string &filename ) 
{
  // get raw data
  //  printf("output [%s] [%s]\n", filename.c_str(), rawfile() );
  int file=open( filename.c_str(), O_WRONLY|O_CREAT|O_TRUNC, 0666);
  if ( file == -1 ) {
    perror("open file");
    return 0;
  }
  
  int maxiosz=1024*1024;

  size_type size = dm1*dm2*dm3*sizeof(T);
  int n = size / maxiosz;
  char *p = reinterpret_cast<char *>(objs[0][0]);

  printf("Start writing...%d %d %d\n", size, maxiosz, n);

  for ( ; n> 0 ; n--, p+= maxiosz) {
    int l = write( file, p, maxiosz);
    if ( l != maxiosz ) 
      perror("write ");
  }
  int sz = (size % maxiosz );
  int l = write( file, p, sz); 
  if ( l != (size % maxiosz ) ) {
    printf("Error: wrote %d / %d\n", l,(size % maxiosz )); 
    perror("write ");
  }
        
  fsync(file);
  close(file);

  return 1;
} 
#endif
}

#endif