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/* -*- c++ -*- */
/*
* Copyright 2004,2010 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gr_check_counting_s.h>
#include <gr_io_signature.h>
#include <stdlib.h>
#include <stdio.h>
gr_check_counting_s_sptr
gr_make_check_counting_s (bool do_32bit)
{
return gnuradio::get_initial_sptr(new gr_check_counting_s (do_32bit));
}
gr_check_counting_s::gr_check_counting_s (bool do_32bit)
: gr_sync_block ("gr_check_counting",
gr_make_io_signature (1, 1, sizeof (short)),
gr_make_io_signature (0, 0, 0)),
d_state(SEARCHING), d_history (0), d_current_count (0), d_current_count_32bit(0),
d_total_errors (0), d_total_shorts (0),
d_do_32bit(do_32bit)
{
enter_SEARCHING ();
}
int
gr_check_counting_s::work (int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
unsigned short *in = (unsigned short *) input_items[0];
if(d_do_32bit)
return check_32bit(noutput_items,in);
else
return check_16bit(noutput_items,in);
}
int
gr_check_counting_s::check_16bit (int noutput_items,
unsigned short * in)
{
for (int i = 0; i < noutput_items; i++){
unsigned short x = in[i];
switch (d_state){
case SEARCHING:
if (x == d_current_count){
right ();
log_error (d_current_count, x);
d_current_count = d_current_count + 1;
if (right_three_times ())
enter_LOCKED ();
}
else {
wrong ();
log_error (d_current_count, x);
d_current_count = x + 1;
}
break;
case LOCKED:
if (x == d_current_count){
right ();
d_current_count = d_current_count + 1;
}
else {
wrong ();
log_error (d_current_count, x);
d_current_count = d_current_count + 1;
if (wrong_three_times ())
enter_SEARCHING ();
}
break;
default:
abort ();
}
d_total_shorts++;
}
return noutput_items;
}
int
gr_check_counting_s::check_32bit (int noutput_items,
unsigned short * in)
{
for (int i = 0; i < noutput_items-1; i+=2){
unsigned int x_high16bits = in[i];
unsigned int x_low16bits = in[i+1];
unsigned int x = x_high16bits<<16 | x_low16bits;
switch (d_state){
case SEARCHING:
if (x == d_current_count_32bit){
right ();
log_error_32bit (d_current_count_32bit, x);
d_current_count_32bit = d_current_count_32bit + 1;
if (right_three_times ())
enter_LOCKED ();
}
else {
wrong ();
log_error_32bit (d_current_count_32bit, x);
d_current_count_32bit = x + 1;
}
break;
case LOCKED:
if (x == d_current_count_32bit){
right ();
d_current_count_32bit = d_current_count_32bit + 1;
}
else {
wrong ();
log_error_32bit (d_current_count_32bit, x);
d_current_count_32bit = d_current_count_32bit + 1;
if (wrong_three_times ())
enter_SEARCHING ();
}
break;
default:
abort ();
}
d_total_shorts++;
}
return noutput_items;
}
void
gr_check_counting_s::enter_SEARCHING ()
{
d_state = SEARCHING;
fprintf (stdout, "gr_check_counting: enter_SEARCHING at offset %8ld (0x%08lx)\n",
d_total_shorts, d_total_shorts);
}
void
gr_check_counting_s::enter_LOCKED ()
{
d_state = LOCKED;
fprintf (stdout, "gr_check_counting: enter_LOCKED at offset %8ld (0x%08lx)\n",
d_total_shorts, d_total_shorts);
}
void
gr_check_counting_s::log_error (unsigned short expected, unsigned short actual)
{
fprintf (stdout,
"gr_check_counting: expected %5d (0x%04x) got %5d (0x%04x) offset %8ld (0x%08lx)\n",
expected, expected, actual, actual, d_total_shorts, d_total_shorts);
}
void
gr_check_counting_s::log_error_32bit (unsigned int expected, unsigned int actual)
{
fprintf (stdout,
"gr_check_counting: expected %10d (0x%08x) got %10d (0x%08x) offset %8ld (0x%08lx)\n",
expected, expected, actual, actual, d_total_shorts, d_total_shorts);
}
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