include/wipal/filter/time_adjuster.hh

/*
 * WiPal - A library and a set of tools to manipulate wireless traces.
 * Copyright (C) 2007, 2008, 2009  Universite Pierre et Marie Curie - Paris 6
 *
 * This program 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 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301  USA
 *
 * Author: Thomas Claveirole <thomas.claveirole@lip6.fr>
 */
#ifndef FILTER_TIME_ADJUSTER_HH_
# define FILTER_TIME_ADJUSTER_HH_

# include <boost/optional.hpp>

# include <wipal/tool/microseconds_stamp.hh>
# include <wipal/pcap/pkt.hh>
# include <wipal/tool/valued_iterator.hh>
# include <wipal/tool/iterable.hh>
# include <wipal/wifi/time_converter.hh>
# include <wipal/wifi/addr_mapping.hh>

# include "time_adjuster_fwd.hh"

namespace wpl
{

  namespace tool
  {

    template <class I1, class I2, class HT, class B1, class B2>
    struct types< wpl::filter::internals::
      time_adjuster_iterator<I1, I2, HT, B1, B2> >
    {
      typedef wpl::filter::time_adjuster<I1, I2, HT, B1>        iterable_type;
      typedef typename I1::value_type                           value_type;
    };

    template <class I1, class I2, class HT, class B>
    struct types< wpl::filter::time_adjuster<I1, I2, HT, B> >
    {
      typedef wpl::filter::internals::
      time_adjuster_iterator<I1, I2, HT, B, bottom>
      iterator;
    };

  } // End of namespace wpl::tool.

  namespace filter
  {

    namespace internals
    {

      template <class InputIterator1,
                class InputIterator2,
                class HeaderType,
                class B,
                class Bottom = tool::bottom>
      struct time_adjuster_iterator:
        WP_INHERIT(public tool::valued_iterator,
                   time_adjuster_iterator<InputIterator1, InputIterator2,
                   HeaderType, B, Bottom>)
      {

        typedef WP_GET_EXACT(Bottom, time_adjuster_iterator<InputIterator1,
                             InputIterator2,
                             HeaderType,
                             B, Bottom>)
          exact_type;
        typedef tool::valued_iterator<exact_type>       super_type;
        typedef WP_TYPE(value_type, exact_type)         value_type;
        typedef WP_TYPE(iterable_type, exact_type)      iterable_type;

        time_adjuster_iterator(const iterable_type& i, bool end);


        bool            equal(const time_adjuster_iterator& rhs) const;
        void            increment();

      private:
        typedef typename InputIterator2::value_type::coefs_type coefs_type;

        void                            update_coefs();

        const iterable_type*            iterable_;
        boost::optional<coefs_type>     coefs_;

        InputIterator1                  next1_;
        InputIterator2                  next2_;
      };

      template <class HeaderType, class S>
      wifi::time_converter<HeaderType>
      time_reference(const pkt::packet<S>&      f,
                     tool::end::endianness      e,
                     bool                       p);

      template <class HeaderType>
      void
      adjust(pkt::metadata&                                             meta,
             HeaderType*                                                h,
             bool                                                       swap,
             const typename wifi::time_converter<HeaderType>::time_values&
                                                                        tv);

    } // End of namespace internals.

    template <class InputIterator1,
              class InputIterator2,
              class HeaderType,
              class Bottom = tool::bottom>
    struct time_adjuster: WP_INHERIT(public tool::iterable,
                                     time_adjuster<InputIterator1,
                                                   InputIterator2,
                                                   HeaderType,
                                                   Bottom>)
    {
      template <class S>
      time_adjuster(const InputIterator1&       first1,
                    const InputIterator1&       last1,
                    const InputIterator2&       first2,
                    const InputIterator2&       last2,
                    const pkt::packet<S>&       time_reference,
                    tool::end::endianness       phy_end,
                    bool                        pcap_tstamps);

    private:
      wifi::time_converter<HeaderType>  convert_;
      tool::end::endianness             phy_end_;

      InputIterator1                    first1_;
      InputIterator1                    last1_;
      InputIterator2                    first2_;
      InputIterator2                    last2_;

      friend class internals::time_adjuster_iterator<InputIterator1,
                                                     InputIterator2,
                                                     HeaderType,
                                                     Bottom, tool::bottom>;
    };

    template <class U, class HT, template <class, class, class> class Int,
              class I1, class I2, class F>
    void
    provide_time_adjuster(const I1& first1, const I1&   last1,
                          const I2& first2, const I2&   last2,
                          opt::list&    options,
                          F&            func);

  } // End of namespace wpl::filter.

} // End of namespace wpl.

# include "time_adjuster.hxx"

#endif // ! FILTER_TIME_ADJUSTER_HH_

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