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/* -*- c++ -*- */
/*
* Copyright 2011,2012,2018 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 <gnuradio/digital/constellation_receiver_cb.h>
#include <gnuradio/attributes.h>
#include <gnuradio/gr_complex.h>
#include <gnuradio/math.h>
namespace gr {
namespace digital {
class constellation_receiver_cb_impl
: public constellation_receiver_cb
{
public:
constellation_receiver_cb_impl(constellation_sptr constell,
float loop_bw, float fmin, float fmax);
~constellation_receiver_cb_impl();
void setup_rpc();
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:
constellation_sptr d_constellation;
//! Set the phase and the frequency.
//! Typically used when we receive a tag with values for these.
void set_phase_freq(float phase, float freq);
/*!
* Message handler port to receiver a new constellation.
* constellation_pmt is a pmt_any; constellation objects have
* an as_pmt function that can be used for this purpose.
*/
void handle_set_constellation(pmt::pmt_t constellation_pmt);
/*!
* Message handler port to update the phase of the rotator. The
* phase should be a real number (float or double) that is added
* to the current phase. So we can rotate the constellation by
* 90 degress by passing a value of pmt::from_double(GR_M_PI/2).
*/
void handle_rotate_phase(pmt::pmt_t rotation);
//! Set the constellation used.
//! Typically used when we receive a tag with a value for this.
void set_constellation(constellation_sptr constellation);
//! 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];
};
} /* namespace digital */
} /* namespace gr */
#endif /* INCLUDED_DIGITAL_CONSTELLATION_RECEIVER_CB_IMPL_H */
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