mirror of https://github.com/gnss-sdr/gnss-sdr
79 lines
2.6 KiB
C++
79 lines
2.6 KiB
C++
/*!
|
|
* \file nsr_file_signal_source.cc
|
|
* \brief Implementation of a class that reads signals samples from a NSR 2 bits sampler front-end file
|
|
* and adapts it to a SignalSourceInterface. More information about the front-end here
|
|
* http://www.ifen.com/products/sx-scientific-gnss-solutions/nsr-software-receiver.html
|
|
* \author Javier Arribas, 2013 jarribas(at)cttc.es
|
|
*
|
|
* -----------------------------------------------------------------------------
|
|
*
|
|
* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
|
|
* This file is part of GNSS-SDR.
|
|
*
|
|
* Copyright (C) 2010-2021 (see AUTHORS file for a list of contributors)
|
|
* SPDX-License-Identifier: GPL-3.0-or-later
|
|
*
|
|
* -----------------------------------------------------------------------------
|
|
*/
|
|
|
|
#include "nsr_file_signal_source.h"
|
|
#include "gnss_sdr_string_literals.h"
|
|
#include <glog/logging.h>
|
|
|
|
using namespace std::string_literals;
|
|
|
|
NsrFileSignalSource::NsrFileSignalSource(const ConfigurationInterface* configuration,
|
|
const std::string& role, unsigned int in_streams, unsigned int out_streams,
|
|
Concurrent_Queue<pmt::pmt_t>* queue)
|
|
: FileSourceBase(configuration, role, "Nsr_File_Signal_Source"s, queue, "byte"s)
|
|
{
|
|
if (in_streams > 0)
|
|
{
|
|
LOG(ERROR) << "A signal source does not have an input stream";
|
|
}
|
|
if (out_streams > 1)
|
|
{
|
|
LOG(ERROR) << "This implementation only supports one output stream";
|
|
}
|
|
}
|
|
|
|
std::tuple<size_t, bool> NsrFileSignalSource::itemTypeToSize()
|
|
{
|
|
auto is_complex = false;
|
|
auto item_size = size_t(sizeof(char)); // default
|
|
|
|
if (item_type() == "byte")
|
|
{
|
|
item_size = sizeof(char);
|
|
}
|
|
else
|
|
{
|
|
LOG(WARNING) << item_type() << " unrecognized item type. Using byte.";
|
|
}
|
|
|
|
return std::make_tuple(item_size, is_complex);
|
|
}
|
|
|
|
// 1 byte -> 4 samples
|
|
double NsrFileSignalSource::packetsPerSample() const { return 4.0; }
|
|
gnss_shared_ptr<gr::block> NsrFileSignalSource::source() const { return unpack_byte_; }
|
|
|
|
|
|
void NsrFileSignalSource::create_file_source_hook()
|
|
{
|
|
unpack_byte_ = make_unpack_byte_2bit_samples();
|
|
DLOG(INFO) << "unpack_byte_2bit_samples(" << unpack_byte_->unique_id() << ")";
|
|
}
|
|
|
|
void NsrFileSignalSource::pre_connect_hook(gr::top_block_sptr top_block)
|
|
{
|
|
top_block->connect(file_source(), 0, unpack_byte_, 0);
|
|
DLOG(INFO) << "connected file_source to unpacker";
|
|
}
|
|
|
|
void NsrFileSignalSource::pre_disconnect_hook(gr::top_block_sptr top_block)
|
|
{
|
|
top_block->disconnect(file_source(), 0, unpack_byte_, 0);
|
|
DLOG(INFO) << "disconnected file_source from unpacker";
|
|
}
|