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/* -*- c++ -*- */
/*
* Copyright 2006 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_ATSC_BIT_TIMING_LOOP_H
#define INCLUDED_ATSC_BIT_TIMING_LOOP_H
#include <atsc_api.h>
#include <cstdio>
#include <gr_block.h>
#include <atsci_diag_output.h>
#include <atsci_sssr.h>
#include <atsci_syminfo.h>
class atsc_bit_timing_loop;
typedef boost::shared_ptr<atsc_bit_timing_loop> atsc_bit_timing_loop_sptr;
ATSC_API atsc_bit_timing_loop_sptr atsc_make_bit_timing_loop();
/*!
* \brief ATSC BitTimingLoop3
* \ingroup atsc
*
* This class accepts a single real input and produces two outputs,
* the raw symbol (float) and the tag (atsc_syminfo)
*/
class ATSC_API atsc_bit_timing_loop : public gr_block
{
friend ATSC_API atsc_bit_timing_loop_sptr atsc_make_bit_timing_loop();
atsc_bit_timing_loop();
public:
int work (int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
void reset() { /* nop */ }
~atsc_bit_timing_loop () { };
void forecast (int noutput_items, gr_vector_int &ninput_items_required);
int general_work (int noutput_items,
gr_vector_int &ninput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
// debug (NOPs)
void set_mu (double a_mu) { }
void set_no_update (bool a_no_update) { }
void set_loop_filter_tap (double tap) { }
void set_timing_rate (double rate) { }
protected:
atsci_sssr d_sssr;
atsci_interpolator d_interp;
unsigned long long d_next_input;
double d_rx_clock_to_symbol_freq;
int d_si;
};
#endif /* INCLUDED_ATSC_BIT_TIMING_LOOP_H */
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