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/*!
* \file gnss_sdr_valve.h
* \brief Interface of a GNU Radio block that sends a STOP message to the
* control queue right after a specific number of samples have passed through it.
* \author Javier Arribas, 2018. jarribas(at)cttc.es
* \author Carlos Aviles, 2010. carlos.avilesr(at)googlemail.com
*
* -----------------------------------------------------------------------------
*
* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
* This file is part of GNSS-SDR.
*
* Copyright (C) 2010-2020 (see AUTHORS file for a list of contributors)
* SPDX-License-Identifier: GPL-3.0-or-later
*
* -----------------------------------------------------------------------------
*/
#ifndef GNSS_SDR_GNSS_SDR_VALVE_H
#define GNSS_SDR_GNSS_SDR_VALVE_H
#include "concurrent_queue.h"
#include "gnss_block_interface.h"
#include <gnuradio/sync_block.h> // for sync_block
#include <gnuradio/types.h> // for gr_vector_const_void_star
#include <pmt/pmt.h>
#include <cstddef> // for size_t
#include <cstdint>
/** \addtogroup Signal_Source
* \{ */
/** \addtogroup Signal_Source_libs
* \{ */
class Gnss_Sdr_Valve;
gnss_shared_ptr<Gnss_Sdr_Valve> gnss_sdr_make_valve(
size_t sizeof_stream_item,
uint64_t nitems,
Concurrent_Queue<pmt::pmt_t>* queue);
gnss_shared_ptr<Gnss_Sdr_Valve> gnss_sdr_make_valve(
size_t sizeof_stream_item,
uint64_t nitems,
Concurrent_Queue<pmt::pmt_t>* queue,
bool stop_flowgraph);
/*!
* \brief Implementation of a GNU Radio block that sends a STOP message to the
* control queue right after a specific number of samples have passed through it.
*/
class Gnss_Sdr_Valve : public gr::sync_block
{
public:
void open_valve();
int work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items);
private:
friend gnss_shared_ptr<Gnss_Sdr_Valve> gnss_sdr_make_valve(
size_t sizeof_stream_item,
uint64_t nitems,
Concurrent_Queue<pmt::pmt_t>* queue);
friend gnss_shared_ptr<Gnss_Sdr_Valve> gnss_sdr_make_valve(
size_t sizeof_stream_item,
uint64_t nitems,
Concurrent_Queue<pmt::pmt_t>* queue,
bool stop_flowgraph);
Gnss_Sdr_Valve(size_t sizeof_stream_item,
uint64_t nitems,
Concurrent_Queue<pmt::pmt_t>* queue, bool stop_flowgraph);
uint64_t d_nitems;
uint64_t d_ncopied_items;
Concurrent_Queue<pmt::pmt_t>* d_queue;
bool d_stop_flowgraph;
bool d_open_valve;
};
/** \} */
/** \} */
#endif // GNSS_SDR_GNSS_SDR_VALVE_H