/* -*- c++ -*- */
/* 
 * Copyright 2014 <+YOU OR YOUR COMPANY+>.
 * 
 * This 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.
 * 
 * This software 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 software; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <gnuradio/io_signature.h>
#include "newblock_impl.h"
#include <math.h>


float G_n1;


namespace gr {
  namespace agcs {



    newblock::sptr
    newblock::make()
    {
      return gnuradio::get_initial_sptr
        (new newblock_impl());
    }

    /*
     * The private constructor
     */
    newblock_impl::newblock_impl()
      : gr::sync_block("newblock",
              gr::io_signature::make(1, 1, sizeof(float)),
              gr::io_signature::make(1, 1, sizeof(float)))
    {
    G_n1=1;
    }

    /*
     * Our virtual destructor.
     */
    newblock_impl::~newblock_impl()
    {
    }

    int
    newblock_impl::work(int noutput_items,
			  gr_vector_const_void_star &input_items,
			  gr_vector_void_star &output_items)
    {
        float *in = (float *) input_items[0];
        float *out = (float *) output_items[0];
        float ad, G_n;
        float alfa=0.001;
        float Ref=1; 

       // Do <+signal processing+>
	ad=log2(Ref*in[0]);
	G_n=(ad*alfa)+G_n1;	

	out[0]=powf(2,G_n1);    //(unsigned int*) 10*log10(2^(G_n1));
	G_n1=G_n;

        // Tell runtime system how many output items we produced.
        return noutput_items;
    }

  } /* namespace agcs */
} /* namespace gr */