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gnss-sdr/drivers/gr-dbfcttc/lib/raw_array_impl.h

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/*!
* \file raw_array_impl.h
* \brief GNU Radio source block to acces to experimental GNSS Array platform.
* \author Javier Arribas, 2014. jarribas(at)cttc.es
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2014 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
*
* This file is part of GNSS-SDR.
*
* GNSS-SDR 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 of the License, or
* at your option) any later version.
*
* GNSS-SDR 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 GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/
#ifndef INCLUDED_DBFCTTC_RAW_ARRAY_IMPL_H
#define INCLUDED_DBFCTTC_RAW_ARRAY_IMPL_H
#include <dbfcttc/raw_array.h>
//#include <boost/thread/mutex.hpp>
#include <boost/thread.hpp>
#include <pcap.h>
namespace gr {
namespace dbfcttc {
class raw_array_impl : public raw_array
{
private:
//omni_mutex d_mutex; // no longer available in GNU Radio
boost::mutex d_mutex;
pcap_t* descr; //ethernet pcap device descriptor
int fifo_pipe[2];
gr_complex **fifo_buff_ch;
int fifo_read_ptr;
int fifo_write_ptr;
int fifo_items;
const char *d_src_device;
short d_number_of_channels;
int d_snapshots_per_frame;
int d_inter_frame_delay;
int d_sampling_freq;
bool flag_16_bits_sample;
bool d_flag_start_frame;
bool d_fifo_full;
int d_last_frame_counter;
int d_num_rx_errors;
boost::thread *d_pcap_thread;
/*!
* \brief
* Opens the ethernet device using libpcap raw capture mode
* If any of these fail, the fuction retuns the error and exits.
*/
bool open();
/*!
* \brief
* Configure the Array hardware platform with the selected parameters. Uses the same ethernet connection
*/
bool configure_array();
/*!
* \brief
* Start the array operation. Uses the same ethernet connection
*/
bool start_array();
/*!
* \brief
* Stop the array operation. Uses the same ethernet connection
*/
bool stop_array();
void my_pcap_loop_thread(pcap_t *pcap_handle);
void pcap_callback(u_char *args, const struct pcap_pkthdr* pkthdr, const u_char* packet);
static void static_pcap_callback(u_char *args, const struct pcap_pkthdr* pkthdr, const u_char* packet);
public:
raw_array_impl(const char *src_device,short number_of_channels, int snapshots_per_frame, int inter_frame_delay, int sampling_freq);
~raw_array_impl();
// Where all the action really happens
int work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
} // namespace dbfcttc
} // namespace gr
#endif /* INCLUDED_DBFCTTC_RAW_ARRAY_IMPL_H */