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/* -*- c++ -*- */
/*
* Copyright 2011,2012 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_DIGITAL_CONSTELLATION_RECEIVER_CB_IMPL_H
#define INCLUDED_DIGITAL_CONSTELLATION_RECEIVER_CB_IMPL_H
#include <digital/constellation_receiver_cb.h>
#include <gruel/attributes.h>
#include <gr_complex.h>
#include <gri_control_loop.h>
namespace gr {
namespace digital {
class constellation_receiver_cb_impl
: public constellation_receiver_cb, gri_control_loop
{
public:
constellation_receiver_cb_impl(constellation_sptr constell,
float loop_bw, float fmin, float fmax);
~constellation_receiver_cb_impl();
int general_work(int noutput_items,
gr_vector_int &ninput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
protected:
void phase_error_tracking(float phase_error);
private:
unsigned int d_M;
constellation_sptr d_constellation;
unsigned int d_current_const_point;
//! delay line length.
static const unsigned int DLLEN = 8;
//! delay line plus some length for overflow protection
__GR_ATTR_ALIGNED(8) gr_complex d_dl[2*DLLEN];
//! index to delay line
unsigned int d_dl_idx;
};
} /* namespace digital */
} /* namespace gr */
#endif /* INCLUDED_DIGITAL_CONSTELLATION_RECEIVER_CB_IMPL_H */
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