GNU Radio Manual and C++ API Reference 3.7.14.0
The Free & Open Software Radio Ecosystem
bit_timing_loop.h
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1/* -*- c++ -*- */
2/*
3 * Copyright 2006 Free Software Foundation, Inc.
4 *
5 * This file is part of GNU Radio
6 *
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
10 * any later version.
11 *
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
21 */
22
23#ifndef INCLUDED_ATSC_BIT_TIMING_LOOP_H
24#define INCLUDED_ATSC_BIT_TIMING_LOOP_H
25
26#include <gnuradio/atsc/api.h>
30#include <gnuradio/block.h>
31#include <cstdio>
32
34typedef boost::shared_ptr<atsc_bit_timing_loop> atsc_bit_timing_loop_sptr;
35
36ATSC_API atsc_bit_timing_loop_sptr atsc_make_bit_timing_loop();
37
38/*!
39 * \brief ATSC BitTimingLoop3
40 * \ingroup atsc
41 *
42 * This class accepts a single real input and produces two outputs,
43 * the raw symbol (float) and the tag (atsc_syminfo)
44 */
46{
47 friend ATSC_API atsc_bit_timing_loop_sptr atsc_make_bit_timing_loop();
48
50
51public:
52 int work(int noutput_items,
53 gr_vector_const_void_star& input_items,
54 gr_vector_void_star& output_items);
55
56 void reset()
57 { /* nop */
58 }
59
61
62 void forecast(int noutput_items, gr_vector_int& ninput_items_required);
63
64 int general_work(int noutput_items,
65 gr_vector_int& ninput_items,
66 gr_vector_const_void_star& input_items,
67 gr_vector_void_star& output_items);
68
69
70 // debug (NOPs)
71 void set_mu(double a_mu) {}
72 void set_no_update(bool a_no_update) {}
73 void set_loop_filter_tap(double tap) {}
74 void set_timing_rate(double rate) {}
75
76
77protected:
80 unsigned long long d_next_input;
82 int d_si;
83};
84
85#endif /* INCLUDED_ATSC_BIT_TIMING_LOOP_H */
ATSC_API atsc_bit_timing_loop_sptr atsc_make_bit_timing_loop()
ATSC BitTimingLoop3.
Definition: bit_timing_loop.h:46
double d_rx_clock_to_symbol_freq
Definition: bit_timing_loop.h:81
void forecast(int noutput_items, gr_vector_int &ninput_items_required)
Estimate input requirements given output request.
void set_timing_rate(double rate)
Definition: bit_timing_loop.h:74
~atsc_bit_timing_loop()
Definition: bit_timing_loop.h:60
void set_mu(double a_mu)
Definition: bit_timing_loop.h:71
void set_no_update(bool a_no_update)
Definition: bit_timing_loop.h:72
int d_si
Definition: bit_timing_loop.h:82
atsci_sssr d_sssr
Definition: bit_timing_loop.h:78
int work(int noutput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
void reset()
Definition: bit_timing_loop.h:56
friend ATSC_API atsc_bit_timing_loop_sptr atsc_make_bit_timing_loop()
atsci_interpolator d_interp
Definition: bit_timing_loop.h:79
void set_loop_filter_tap(double tap)
Definition: bit_timing_loop.h:73
int general_work(int noutput_items, gr_vector_int &ninput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
compute output items from input items
unsigned long long d_next_input
Definition: bit_timing_loop.h:80
interpolator control for segment and symbol sync recovery
Definition: sssr_impl.h:200
ATSC Segment and Symbol Sync Recovery.
Definition: sssr_impl.h:134
The abstract base class for all 'terminal' processing blocks.
Definition: block.h:66
std::vector< const void * > gr_vector_const_void_star
Definition: gnuradio-runtime/include/gnuradio/types.h:40
std::vector< void * > gr_vector_void_star
Definition: gnuradio-runtime/include/gnuradio/types.h:39
std::vector< int > gr_vector_int
Definition: gnuradio-runtime/include/gnuradio/types.h:35
#define ATSC_API
Definition: gr-atsc/include/gnuradio/atsc/api.h:30