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/* -*- c++ -*- */
/*
* Copyright 2009 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 <noaa_hrpt_decoder.h>
#include <gr_io_signature.h>
#define SYNC1 0x0284
#define SYNC2 0x016F
#define SYNC3 0x035C
#define SYNC4 0x019D
#define SYNC5 0x020F
#define SYNC6 0x0095
noaa_hrpt_decoder_sptr
noaa_make_hrpt_decoder()
{
return gnuradio::get_initial_sptr(new noaa_hrpt_decoder());
}
noaa_hrpt_decoder::noaa_hrpt_decoder()
: gr_sync_block("noaa_hrpt_decoder",
gr_make_io_signature(1, 1, sizeof(short)),
gr_make_io_signature(0, 0, 0))
{
d_word_count = 0;
}
int
noaa_hrpt_decoder::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
const unsigned short *in = (const unsigned short*)input_items[0];
int i = 0;
while (i < noutput_items) {
unsigned short word = in[i++];
d_word_count++;
//fprintf(stderr, "%5u: ", d_word_count);
for (int pos = 0; pos < 10; pos++) {
char ch = (word & (1 << 9)) ? '1' : '0';
word = word << 1;
//fprintf(stderr, "%c ", ch);
}
//fprintf(stderr, "\n");
if (d_word_count == 11090) {
d_word_count = 0;
//fprintf(stderr, "\n");
}
}
return i;
}
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