120 lines
3.1 KiB
C++
120 lines
3.1 KiB
C++
/* -*- c++ -*- */
|
|
/* @file
|
|
* @author (C) 2015 by Roman Khassraf <rkhassraf@gmail.com>
|
|
* @section LICENSE
|
|
*
|
|
* Gr-gsm 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.
|
|
*
|
|
* Gr-gsm 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 gr-gsm; 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 <gnuradio/io_signature.h>
|
|
#include "burst_timeslot_filter_impl.h"
|
|
#include <stdio.h>
|
|
#include <grgsm/endian.h>
|
|
#include <grgsm/gsmtap.h>
|
|
|
|
|
|
namespace gr {
|
|
namespace gsm {
|
|
|
|
burst_timeslot_filter::sptr
|
|
burst_timeslot_filter::make(unsigned int timeslot)
|
|
{
|
|
return gnuradio::get_initial_sptr
|
|
(new burst_timeslot_filter_impl(timeslot));
|
|
}
|
|
|
|
/*
|
|
* The private constructor
|
|
*/
|
|
burst_timeslot_filter_impl::burst_timeslot_filter_impl(unsigned int timeslot)
|
|
: gr::block("burst_timeslot_filter",
|
|
gr::io_signature::make(0, 0, 0),
|
|
gr::io_signature::make(0, 0, 0)),
|
|
d_timeslot(timeslot),
|
|
d_filter_policy(FILTER_POLICY_DEFAULT)
|
|
{
|
|
message_port_register_in(pmt::mp("in"));
|
|
message_port_register_out(pmt::mp("out"));
|
|
|
|
set_msg_handler(pmt::mp("in"), boost::bind(&burst_timeslot_filter_impl::process_burst, this, boost::placeholders::_1));
|
|
}
|
|
|
|
/*
|
|
* Our virtual destructor.
|
|
*/
|
|
burst_timeslot_filter_impl::~burst_timeslot_filter_impl() {}
|
|
|
|
void burst_timeslot_filter_impl::process_burst(pmt::pmt_t msg)
|
|
{
|
|
if (d_filter_policy == FILTER_POLICY_DROP_ALL)
|
|
return;
|
|
|
|
if (d_filter_policy == FILTER_POLICY_PASS_ALL) {
|
|
message_port_pub(pmt::mp("out"), msg);
|
|
return;
|
|
}
|
|
|
|
pmt::pmt_t header_plus_burst = pmt::cdr(msg);
|
|
gsmtap_hdr * header = (gsmtap_hdr *)pmt::blob_data(header_plus_burst);
|
|
|
|
unsigned int timeslot = header->timeslot;
|
|
|
|
if (header->timeslot == d_timeslot)
|
|
{
|
|
message_port_pub(pmt::mp("out"), msg);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* External API
|
|
*/
|
|
unsigned int
|
|
burst_timeslot_filter_impl::get_tn(void)
|
|
{
|
|
return d_timeslot;
|
|
}
|
|
|
|
unsigned int
|
|
burst_timeslot_filter_impl::set_tn(unsigned int tn)
|
|
{
|
|
if (tn < 8)
|
|
d_timeslot = tn;
|
|
|
|
return d_timeslot;
|
|
}
|
|
|
|
/* Filtering policy */
|
|
filter_policy
|
|
burst_timeslot_filter_impl::get_policy(void)
|
|
{
|
|
return d_filter_policy;
|
|
}
|
|
|
|
filter_policy
|
|
burst_timeslot_filter_impl::set_policy(filter_policy policy)
|
|
{
|
|
d_filter_policy = policy;
|
|
return d_filter_policy;
|
|
}
|
|
|
|
} /* namespace gsm */
|
|
} /* namespace gr */
|