mirror of
https://github.com/gnss-sdr/gnss-sdr
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81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
/*!
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* \file fifo_signal_source.h
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*
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* \brief Header file of the class for retrieving samples through a Unix FIFO
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* \author Malte Lenhart, 2021. malte.lenhart(at)mailbox.org
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*
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*
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* -----------------------------------------------------------------------------
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*
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* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
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* This file is part of GNSS-SDR.
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*
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* Copyright (C) 2010-2021 (see AUTHORS file for a list of contributors)
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* SPDX-License-Identifier: GPL-3.0-or-later
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*
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* -----------------------------------------------------------------------------
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*/
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#ifndef GNSS_SDR_FIFO_SIGNAL_SOURCE_H
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#define GNSS_SDR_FIFO_SIGNAL_SOURCE_H
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#include "concurrent_queue.h"
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#include "signal_source_base.h"
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#include <pmt/pmt.h>
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#include <cstddef>
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#include <string>
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/** \addtogroup Signal_Source
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* \{ */
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/** \addtogroup Signal_Source_adapters
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* \{ */
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// forward declaration to avoid include in header
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class ConfigurationInterface;
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//! \brief Class that reads a sample stream from a Unix FIFO.
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//!
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//! This class supports the following properties:
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//!
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//! .filename - the path to the input file
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//! - may be overridden by the -signal_source or -s command-line arguments
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//!
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//! .sample_type - data type read out from the FIFO. default ishort ;
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//! - note: not output format. that is always gr_complex
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//!
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//! .dump - whether to archive input data
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//!
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//! .dump_filename - if dumping, path to file for output
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//!
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class FifoSignalSource : public SignalSourceBase
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{
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public:
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FifoSignalSource(const ConfigurationInterface* configuration, const std::string& role,
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unsigned int in_streams, unsigned int out_streams,
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Concurrent_Queue<pmt::pmt_t>* queue);
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~FifoSignalSource() = default;
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//! override methods from GNSSBlockInterface
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void connect(gr::top_block_sptr top_block) override;
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void disconnect(gr::top_block_sptr top_block) override;
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size_t item_size() override;
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gr::basic_block_sptr get_left_block() override;
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gr::basic_block_sptr get_right_block() override;
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protected:
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private:
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//! output size - always gr_complex
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const size_t item_size_;
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//! internal fifo_reader_ class acts as signal source
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const gnss_shared_ptr<gr::block> fifo_reader_;
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gnss_shared_ptr<gr::block> file_sink_;
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const bool dump_;
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const std::string dump_filename_;
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};
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/** \} */
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/** \} */
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#endif // GNSS_SDR_FIFO_SIGNAL_SOURCE_H
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