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/* -*- c++ -*- */
/*
* Copyright 2004 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio 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 3, or (at your option)
* any later version.
*
* GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_HOWTO_SQUARE2_FF_H
#define INCLUDED_HOWTO_SQUARE2_FF_H
#include <howto_api.h>
#include <gr_sync_block.h>
class howto_square2_ff;
/*
* We use boost::shared_ptr's instead of raw pointers for all access
* to gr_blocks (and many other data structures). The shared_ptr gets
* us transparent reference counting, which greatly simplifies storage
* management issues. This is especially helpful in our hybrid
* C++ / Python system.
*
* See http://www.boost.org/libs/smart_ptr/smart_ptr.htm
*
* As a convention, the _sptr suffix indicates a boost::shared_ptr
*/
typedef boost::shared_ptr<howto_square2_ff> howto_square2_ff_sptr;
/*!
* \brief Return a shared_ptr to a new instance of howto_square2_ff.
*
* To avoid accidental use of raw pointers, howto_square2_ff's
* constructor is private. howto_make_square2_ff is the public
* interface for creating new instances.
*/
HOWTO_API howto_square2_ff_sptr howto_make_square2_ff ();
/*!
* \brief square2 a stream of floats.
* \ingroup block
*
* This uses the preferred technique: subclassing gr_sync_block.
*/
class HOWTO_API howto_square2_ff : public gr_sync_block
{
private:
// The friend declaration allows howto_make_square2_ff to
// access the private constructor.
friend HOWTO_API howto_square2_ff_sptr howto_make_square2_ff ();
howto_square2_ff (); // private constructor
public:
~howto_square2_ff (); // public destructor
// Where all the action really happens
int work (int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
#endif /* INCLUDED_HOWTO_SQUARE2_FF_H */
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