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Merge branch 'ft/ion-metadata-standard-signal-source' of https://github.com/castle055/gnss-sdr into castle055-ft/ion-metadata-standard-signal-source

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Carles Fernandez 2024-08-18 10:58:20 +02:00
commit deec6f0cfe
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15 changed files with 1426 additions and 6 deletions
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15
CMakeLists.txt
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@ -57,6 +57,8 @@ option(ENABLE_ARRAY "Enable the use of CTTC's antenna array front-end as signal
option(ENABLE_ZMQ "Enable GNU Radio ZeroMQ Messaging, requires gr-zeromq" ON)
option(ENABLE_ION "Enable ION GNSS-SDR Metadata Standard signal source" ON)
# Performance analysis tools
option(ENABLE_GPERFTOOLS "Enable linking to Gperftools libraries (tcmalloc and profiler)" OFF)
@ -1422,6 +1424,19 @@ else()
endif()
################################################################################
# ION GNSS-SDR Metadata Standard
################################################################################
include(FetchContent)
FetchContent_Declare(
gnss_metadata_standard
GIT_REPOSITORY https://github.com/IonMetadataWorkingGroup/GNSS-Metadata-Standard
GIT_TAG master
SOURCE_DIR ${GNSSSDR_BINARY_DIR}/thirdparty/gnss-metadata-standard
CMAKE_ARGS -DABSL_PROPAGATE_CXX_STD=ON -ABSL_BUILD_TESTING=OFF -DCMAKE_INSTALL_PREFIX=${GNSSSDR_BINARY_DIR}/gnss-metadata-standard ${ABSEIL_TOOLCHAIN_FILE}
BINARY_DIR ${GNSSSDR_BINARY_DIR}/gnss-metadata-standard
)
FetchContent_MakeAvailable(gnss_metadata_standard)
################################################################################
# Abseil C++ - https://abseil.io/docs/cpp/

2
src/algorithms/signal_source/adapters/CMakeLists.txt
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@ -119,6 +119,7 @@ set(SIGNAL_SOURCE_ADAPTER_SOURCES
two_bit_packed_file_signal_source.cc
four_bit_cpx_file_signal_source.cc
file_timestamp_signal_source.cc
ion_gsms_signal_source.cc
${OPT_DRIVER_SOURCES}
)
@ -138,6 +139,7 @@ set(SIGNAL_SOURCE_ADAPTER_HEADERS
two_bit_packed_file_signal_source.h
four_bit_cpx_file_signal_source.h
file_timestamp_signal_source.h
ion_gsms_signal_source.h
${OPT_DRIVER_HEADERS}
)

121
src/algorithms/signal_source/adapters/ion_gsms_signal_source.cc Normal file
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@ -0,0 +1,121 @@
/*!
* \file ion_gsms_signal_source.h
* \brief GNSS-SDR Signal Source that reads sample streams following ION's GNSS-SDR metadata standard
* \author Víctor Castillo Agüero, 2024. victorcastilloaguero(at)gmail.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
*
* -----------------------------------------------------------------------------
*/
#include "ion_gsms_signal_source.h"
#include "gnss_sdr_flags.h"
#include "gnss_sdr_string_literals.h"
#include <gnuradio/blocks/copy.h>
#include <string>
#include <unordered_set>
#include <vector>
#if USE_GLOG_AND_GFLAGS
#include <glog/logging.h>
#else
#include <absl/log/log.h>
#endif
using namespace std::string_literals;
std::vector<std::string> parse_comma_list(const std::string& str)
{
std::vector<std::string> list{};
std::size_t prev_comma_at{0};
while (prev_comma_at < str.size())
{
std::size_t comma_at = str.find_first_of(',', prev_comma_at);
if (comma_at == std::string::npos)
{
comma_at = str.size();
}
list.emplace_back(str.substr(prev_comma_at, (comma_at - prev_comma_at)));
prev_comma_at = comma_at + 1;
}
return list;
}
IONGSMSSignalSource::IONGSMSSignalSource(const ConfigurationInterface* configuration,
const std::string& role,
unsigned int in_streams,
unsigned int out_streams,
Concurrent_Queue<pmt::pmt_t>* queue __attribute__((unused)))
: SignalSourceBase(configuration, role, "ION_GSMS_Signal_Source"s),
metadata_file_(configuration->property(role + ".metadata_filename"s, "../data/example_capture_metadata.sdrx"s)),
stream_ids_(parse_comma_list(configuration->property(role + ".streams"s, ""s))),
metadata_(metadata_file_),
timestamp_clock_offset_ms_(configuration->property(role + ".timestamp_clock_offset_ms"s, 0.0)),
in_streams_(in_streams),
out_streams_(out_streams)
{
if (in_streams > 0)
{
LOG(ERROR) << "A signal source does not have an input stream";
}
sources_ = metadata_.make_stream_sources(configuration, role, stream_ids_);
for (const auto& source : sources_)
{
for (std::size_t i = 0; i < source->output_stream_count(); ++i)
{
copy_blocks_.push_back(gr::blocks::copy::make(source->output_stream_item_size(i)));
}
}
}
void IONGSMSSignalSource::connect(gr::top_block_sptr top_block)
{
std::size_t cumulative_index = 0;
for (const auto& source : sources_)
{
for (std::size_t i = 0; i < source->output_stream_count(); ++i, ++cumulative_index)
{
top_block->connect(source, i, copy_blocks_[cumulative_index], 0);
}
}
}
void IONGSMSSignalSource::disconnect(gr::top_block_sptr top_block)
{
std::size_t cumulative_index = 0;
for (const auto& source : sources_)
{
for (std::size_t i = 0; i < source->output_stream_count(); ++i, ++cumulative_index)
{
top_block->disconnect(source, i, copy_blocks_[cumulative_index], 0);
}
}
}
gr::basic_block_sptr IONGSMSSignalSource::get_left_block()
{
LOG(WARNING) << "Trying to get signal source left block.";
// return gr_basic_block_sptr();
return IONGSMSFileSource::sptr();
}
gr::basic_block_sptr IONGSMSSignalSource::get_right_block()
{
return get_right_block(0);
}
gr::basic_block_sptr IONGSMSSignalSource::get_right_block(int RF_channel)
{
return copy_blocks_[RF_channel];
}

79
src/algorithms/signal_source/adapters/ion_gsms_signal_source.h Normal file
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@ -0,0 +1,79 @@
/*!
* \file ion_gsms_signal_source.h
* \brief GNSS-SDR Signal Source that reads sample streams following ION's GNSS-SDR metadata standard
* \author Víctor Castillo Agüero, 2024. victorcastilloaguero(at)gmail.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_ION_METADATA_STANDARD_SIGNAL_SOURCE_H
#define GNSS_SDR_ION_METADATA_STANDARD_SIGNAL_SOURCE_H
#include "configuration_interface.h"
#include "file_source_base.h"
#include "gnss_sdr_timestamp.h"
#include "ion_gsms.h"
#include <string>
#include <vector>
/** \addtogroup Signal_Source
* \{ */
/** \addtogroup Signal_Source_adapters
* \{ */
/*!
* \brief Class that reads signals samples from a file
* and adapts it to a SignalSourceInterface
*/
class IONGSMSSignalSource : public SignalSourceBase
{
public:
IONGSMSSignalSource(const ConfigurationInterface* configuration, const std::string& role,
unsigned int in_streams, unsigned int out_streams,
Concurrent_Queue<pmt::pmt_t>* queue);
~IONGSMSSignalSource() override = default;
protected:
// std::tuple<size_t, bool> itemTypeToSize() override;
// double packetsPerSample() const override;
void connect(gr::top_block_sptr top_block) override;
void disconnect(gr::top_block_sptr top_block) override;
gr::basic_block_sptr get_left_block() override;
gr::basic_block_sptr get_right_block() override;
gr::basic_block_sptr get_right_block(int RF_channel) override;
inline size_t item_size() override
{
return (*sources_.begin())->output_stream_item_size(0);
}
private:
std::string metadata_file_;
std::vector<std::string> stream_ids_;
std::vector<IONGSMSFileSource::sptr> sources_;
std::vector<gnss_shared_ptr<gr::block>> copy_blocks_;
IONGSMSMetadataHandler metadata_;
gnss_shared_ptr<Gnss_Sdr_Timestamp> timestamp_block_;
std::string timestamp_file_;
double timestamp_clock_offset_ms_;
uint32_t in_streams_;
uint32_t out_streams_;
};
/** \} */
/** \} */
#endif // GNSS_SDR_ION_METADATA_STANDARD_SIGNAL_SOURCE_H

27
src/algorithms/signal_source/libs/CMakeLists.txt
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@ -7,9 +7,10 @@
set(OPT_SIGNAL_SOURCE_LIB_SOURCES "")
set(OPT_SIGNAL_SOURCE_LIB_HEADERS "")
if(ENABLE_FMCOMMS2 OR ENABLE_AD9361)
set(OPT_SIGNAL_SOURCE_LIB_SOURCES ${OPT_SIGNAL_SOURCE_LIB_SOURCES} ad9361_manager.cc)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_SOURCES} ad9361_manager.h)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_HEADERS} ad9361_manager.h)
endif()
if(ENABLE_MAX2771)
@ -36,12 +37,23 @@ endif()
if(ENABLE_PLUTOSDR)
set(OPT_SIGNAL_SOURCE_LIB_SOURCES ${OPT_SIGNAL_SOURCE_LIB_SOURCES} ad936x_iio_samples.cc)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_SOURCES} ad936x_iio_samples.h)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_HEADERS} ad936x_iio_samples.h)
set(OPT_SIGNAL_SOURCE_LIB_SOURCES ${OPT_SIGNAL_SOURCE_LIB_SOURCES} ad936x_iio_custom.cc)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_SOURCES} ad936x_iio_custom.h)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_SOURCES} pps_samplestamp.h)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_HEADERS} ad936x_iio_custom.h)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_HEADERS} pps_samplestamp.h)
set(OPT_SIGNAL_SOURCE_LIB_SOURCES ${OPT_SIGNAL_SOURCE_LIB_SOURCES} ppstcprx.cc)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_SOURCES} ppstcprx.h)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_HEADERS} ppstcprx.h)
endif()
if(ENABLE_ION)
set(OPT_SIGNAL_SOURCE_LIB_SOURCES ${OPT_SIGNAL_SOURCE_LIB_SOURCES} ion_gsms.cc)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_HEADERS} ion_gsms.h)
set(OPT_SIGNAL_SOURCE_LIB_SOURCES ${OPT_SIGNAL_SOURCE_LIB_SOURCES} ion_gsms_chunk_data.cc)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_HEADERS} ion_gsms_chunk_data.h)
set(OPT_SIGNAL_SOURCE_LIB_SOURCES ${OPT_SIGNAL_SOURCE_LIB_SOURCES} ion_gsms_metadata_handler.cc)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_HEADERS} ion_gsms_metadata_handler.h)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_HEADERS} ion_gsms_stream_encodings.h)
set(OPT_SIGNAL_SOURCE_LIB_HEADERS ${OPT_SIGNAL_SOURCE_LIB_HEADERS} ion_gsms_chunk_unpacking_ctx.h)
endif()
@ -139,6 +151,11 @@ if(ENABLE_CLANG_TIDY)
endif()
endif()
if(ENABLE_ION)
target_include_directories(signal_source_libs PUBLIC ${GNSSSDR_BINARY_DIR}/thirdparty/gnss-metadata-standard/source/api/inc)
target_link_libraries(signal_source_libs PUBLIC api xml)
endif()
set_property(TARGET signal_source_libs APPEND PROPERTY INTERFACE_INCLUDE_DIRECTORIES
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
)

159
src/algorithms/signal_source/libs/ion_gsms.cc Normal file
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@ -0,0 +1,159 @@
/*!
* \file ion_gsms.cc
* \brief GNU Radio block that reads a Block from a file following ION's GNSS-SDR metadata standard
* \author Víctor Castillo Agüero, 2024. victorcastilloaguero(at)gmail.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
*
* -----------------------------------------------------------------------------
*/
#include "ion_gsms.h"
#include "gnuradio/block.h"
#include <algorithm>
#include <memory>
#include <vector>
#if USE_GLOG_AND_GFLAGS
#include <glog/logging.h>
#else
#include <absl/log/log.h>
#include <utility>
#endif
using namespace std::string_literals;
IONGSMSFileSource::IONGSMSFileSource(
const ConfigurationInterface* configuration __attribute__((unused)),
const std::string& role __attribute__((unused)),
const std::filesystem::path& metadata_filepath,
const GnssMetadata::File& file,
const GnssMetadata::Block& block,
const std::vector<std::string>& stream_ids)
: gr::sync_block(
"ion_gsms_file_source",
gr::io_signature::make(0, 0, 0),
make_output_signature(block, stream_ids)),
file_metadata_(file),
block_metadata_(block),
io_buffer_offset_(0),
maximum_item_rate_(0),
chunk_cycle_length_(0)
{
std::filesystem::path data_filepath = metadata_filepath.parent_path() / file.Url().Value();
fd_ = std::fopen(data_filepath.c_str(), "rb");
std::size_t block_offset = file.Offset();
std::fseek(fd_, file.Offset() + block_offset + block.SizeHeader(), SEEK_SET);
std::size_t output_stream_offset = 0;
for (const auto& chunk : block.Chunks())
{
chunk_data_.emplace_back(std::make_shared<IONGSMSChunkData>(chunk, stream_ids, output_stream_offset));
chunk_cycle_length_ += chunk.CountWords() * chunk.SizeWord();
const std::size_t out_count = chunk_data_.back()->output_stream_count();
output_stream_offset += out_count;
for (std::size_t i = 0; i < out_count; ++i)
{
output_stream_item_sizes_.push_back(chunk_data_.back()->output_stream_item_size(i));
maximum_item_rate_ = std::max(chunk_data_.back()->output_stream_item_rate(i), maximum_item_rate_);
}
}
output_stream_count_ = output_stream_offset;
}
IONGSMSFileSource::~IONGSMSFileSource()
{
std::fclose(fd_);
}
int IONGSMSFileSource::work(
int noutput_items,
gr_vector_const_void_star& input_items __attribute__((unused)),
gr_vector_void_star& output_items)
{
const std::size_t max_sample_output = std::floor((noutput_items - 1.0) / maximum_item_rate_);
io_buffer_.resize(max_sample_output * chunk_cycle_length_);
io_buffer_offset_ = 0;
std::fread(io_buffer_.data(), sizeof(decltype(io_buffer_)::value_type), io_buffer_.size(), fd_);
items_produced_.resize(output_items.size());
for (int& i : items_produced_)
{
i = 0;
}
while (io_buffer_offset_ < io_buffer_.size())
{
for (auto& c : chunk_data_)
{
auto* chunk = c.get();
io_buffer_offset_ += chunk->read_from_buffer(io_buffer_.data(), io_buffer_offset_);
chunk->write_to_output(output_items, items_produced_);
}
}
for (std::size_t i = 0; i < items_produced_.size(); ++i)
{
produce(i, items_produced_[i]);
}
return WORK_CALLED_PRODUCE;
}
std::size_t IONGSMSFileSource::output_stream_count() const
{
return output_stream_count_;
}
std::size_t IONGSMSFileSource::output_stream_item_size(std::size_t stream_index) const
{
return output_stream_item_sizes_[stream_index];
}
gr::io_signature::sptr IONGSMSFileSource::make_output_signature(const GnssMetadata::Block& block, const std::vector<std::string>& stream_ids)
{
int nstreams = 0;
std::vector<int> item_sizes{};
for (const auto& chunk : block.Chunks())
{
for (const auto& lump : chunk.Lumps())
{
for (const auto& stream : lump.Streams())
{
bool found = false;
for (const auto& stream_id : stream_ids)
{
if (stream_id == stream.Id())
{
found = true;
break;
}
}
if (found)
{
++nstreams;
std::size_t sample_bitsize = stream.Packedbits() / stream.RateFactor();
if (stream.Packedbits() >= 2 * stream.RateFactor() * stream.Quantization())
{
// Samples have 'Complex' format
sample_bitsize /= 2;
}
item_sizes.push_back(bits_to_item_size(sample_bitsize));
}
}
}
}
return gr::io_signature::makev(
nstreams,
nstreams,
item_sizes);
}

74
src/algorithms/signal_source/libs/ion_gsms.h Normal file
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@ -0,0 +1,74 @@
/*!
* \file ion_gsms.h
* \brief GNU Radio block that reads a Block from a file following ION's GNSS-SDR metadata standard
* \author Víctor Castillo Agüero, 2024. victorcastilloaguero(at)gmail.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_ION_GNSS_SDR_METADATA_STANDARD_H
#define GNSS_SDR_ION_GNSS_SDR_METADATA_STANDARD_H
#include "configuration_interface.h"
#include "gnss_block_interface.h"
#include "ion_gsms_chunk_data.h"
#include <gnuradio/block.h>
#include <gnuradio/sync_block.h>
#include <filesystem>
#include <memory>
#include <string>
#include <vector>
class IONGSMSFileSource : public gr::sync_block
{
public:
using sptr = gnss_shared_ptr<IONGSMSFileSource>;
IONGSMSFileSource(
const ConfigurationInterface* configuration,
const std::string& role,
const std::filesystem::path& metadata_filepath,
const GnssMetadata::File& file,
const GnssMetadata::Block& block,
const std::vector<std::string>& stream_ids);
~IONGSMSFileSource() override;
int work(
int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items) override;
std::size_t output_stream_count() const;
std::size_t output_stream_item_size(std::size_t stream_index) const;
private:
static gr::io_signature::sptr make_output_signature(const GnssMetadata::Block& block, const std::vector<std::string>& stream_ids);
private:
const GnssMetadata::File& file_metadata_;
const GnssMetadata::Block& block_metadata_;
FILE* fd_;
std::vector<uint8_t> io_buffer_;
std::size_t io_buffer_offset_;
std::vector<int> items_produced_;
std::size_t output_stream_count_;
std::vector<std::size_t> output_stream_item_sizes_;
std::size_t maximum_item_rate_;
std::vector<std::shared_ptr<IONGSMSChunkData>> chunk_data_;
std::size_t chunk_cycle_length_;
};
#include "ion_gsms_metadata_handler.h"
#endif // GNSS_SDR_ION_GNSS_SDR_METADATA_STANDARD_H

266
src/algorithms/signal_source/libs/ion_gsms_chunk_data.cc Normal file
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@ -0,0 +1,266 @@
/*!
* \file ion_gsms_chunk_data.cc
* \brief Holds logic for reading and decoding samples from a chunk
* \author Víctor Castillo Agüero, 2024. victorcastilloaguero(at)gmail.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
*
* -----------------------------------------------------------------------------
*/
#include "ion_gsms_chunk_data.h"
#include <bitset>
#include <string>
#include <vector>
#if USE_GLOG_AND_GFLAGS
#include <glog/logging.h>
#else
#include <absl/log/log.h>
#endif
IONGSMSChunkData::IONGSMSChunkData(const GnssMetadata::Chunk& chunk, const std::vector<std::string>& stream_ids, std::size_t output_stream_offset)
: chunk_(chunk),
sizeword_(chunk_.SizeWord()),
countwords_(chunk_.CountWords())
{
with_word_type(sizeword_, [&]<typename WordType> {
buffer_ = new WordType[countwords_];
});
const std::size_t total_bitsize = sizeword_ * countwords_ * 8;
std::size_t used_bitsize = 0;
std::size_t output_streams = 0;
for (const auto& lump : chunk.Lumps())
{
for (const auto& stream : lump.Streams())
{
used_bitsize += stream.Packedbits();
bool found = false;
for (const auto& stream_id : stream_ids)
{
if (stream_id == stream.Id())
{
found = true;
break;
}
}
if (found)
{
streams_.emplace_back(lump, stream, GnssMetadata::encoding_from_string(stream.Encoding()), output_streams + output_stream_offset);
++output_streams;
std::size_t sample_bitsize = stream.Packedbits() / stream.RateFactor();
std::size_t sample_rate = stream.RateFactor();
if (stream.Packedbits() >= 2 * stream.RateFactor() * stream.Quantization())
{
// Samples have 'Complex' format
sample_bitsize /= 2;
sample_rate *= 2;
}
output_stream_item_size_.push_back(bits_to_item_size(sample_bitsize));
output_stream_item_rate_.push_back(sample_rate);
}
else
{
streams_.emplace_back(lump, stream, GnssMetadata::encoding_from_string(stream.Encoding()), -1);
}
}
}
output_stream_count_ = output_streams;
padding_bitsize_ = total_bitsize - used_bitsize;
}
IONGSMSChunkData::~IONGSMSChunkData()
{
with_word_type(sizeword_, [&]<typename WordType> {
delete[] static_cast<WordType*>(buffer_);
});
}
std::size_t IONGSMSChunkData::read_from_buffer(uint8_t* buffer, std::size_t offset)
{
memset(buffer_, 0, sizeword_ * countwords_);
memcpy(buffer_, &buffer[offset], sizeword_ * countwords_);
return sizeword_ * countwords_;
}
void IONGSMSChunkData::write_to_output(gr_vector_void_star& outputs, std::vector<int>& output_items)
{
switch (sizeword_)
{
case 1:
unpack_words<int8_t>(outputs, output_items);
break;
case 2:
unpack_words<int16_t>(outputs, output_items);
break;
case 4:
unpack_words<int32_t>(outputs, output_items);
break;
case 8:
unpack_words<int64_t>(outputs, output_items);
break;
default:
LOG(ERROR) << "Unknown word size (" << std::to_string(sizeword_) << "), unpacking nothing.";
break;
}
}
std::size_t IONGSMSChunkData::output_stream_count() const
{
return output_stream_count_;
}
std::size_t IONGSMSChunkData::output_stream_item_size(std::size_t stream_index) const
{
return output_stream_item_size_[stream_index];
}
std::size_t IONGSMSChunkData::output_stream_item_rate(std::size_t stream_index) const
{
return output_stream_item_rate_[stream_index];
}
template <typename WT>
void IONGSMSChunkData::unpack_words(gr_vector_void_star& outputs, std::vector<int>& output_items)
{
WT* data = static_cast<WT*>(buffer_);
// TODO - Swap endiannes if needed
IONGSMSChunkUnpackingCtx<WT> ctx{
chunk_.Shift(),
data,
countwords_,
};
// Head padding
if (padding_bitsize_ > 0 && chunk_.Padding() == GnssMetadata::Chunk::Head)
{
ctx.shift_padding(padding_bitsize_);
}
// Samples
for (const auto& [lump, stream, encoding, output_index] : streams_)
{
if (output_index == -1)
{
// skip stream
ctx.shift_padding(stream.Packedbits());
}
else
{
output_items[output_index] += write_stream_samples(ctx, lump, stream, encoding, &outputs[output_index]);
}
}
}
template <typename WT>
std::size_t IONGSMSChunkData::write_stream_samples(
IONGSMSChunkUnpackingCtx<WT>& ctx,
const GnssMetadata::Lump& lump,
const GnssMetadata::IonStream& stream,
const GnssMetadata::StreamEncoding stream_encoding,
void** out)
{
std::size_t sample_bitsize = stream.Packedbits() / stream.RateFactor();
std::size_t sample_count = stream.RateFactor();
if (stream.Packedbits() >= 2 * stream.RateFactor() * stream.Quantization())
{
// Samples have 'Complex' format
sample_bitsize /= 2;
sample_count *= 2;
}
if (sample_bitsize <= 8)
{
write_n_samples<WT, int8_t>(ctx, lump.Shift(), sample_bitsize, sample_count, stream_encoding, (int8_t**)(out));
}
else if (sample_bitsize <= 16)
{
write_n_samples<WT, int16_t>(ctx, lump.Shift(), sample_bitsize, sample_count, stream_encoding, (int16_t**)(out));
}
else if (sample_bitsize <= 32)
{
write_n_samples<WT, int32_t>(ctx, lump.Shift(), sample_bitsize, sample_count, stream_encoding, (int32_t**)(out));
}
else if (sample_bitsize <= 64)
{
write_n_samples<WT, int64_t>(ctx, lump.Shift(), sample_bitsize, sample_count, stream_encoding, (int64_t**)(out));
}
return sample_count;
}
template <typename WT, typename OT>
void IONGSMSChunkData::write_n_samples(
IONGSMSChunkUnpackingCtx<WT>& ctx,
GnssMetadata::Lump::LumpShift lump_shift,
uint8_t sample_bitsize,
std::size_t sample_count,
GnssMetadata::StreamEncoding stream_encoding,
OT** out)
{
if (lump_shift == GnssMetadata::Lump::shiftRight)
{
auto* sample = static_cast<OT*>(*out);
sample += sample_count;
for (std::size_t i = 0; i < sample_count; ++i)
{
*sample = 0;
ctx.shift_sample(sample_bitsize, sample);
decode_sample(sample_bitsize, sample, stream_encoding);
--sample;
}
}
else // if (lump_shift == GnssMetadata::Lump::shiftLeft || lump_shift == GnssMetadata::Lump::shiftUndefined)
{
auto* sample = static_cast<OT*>(*out);
for (std::size_t i = 0; i < sample_count; ++i)
{
*sample = 0;
ctx.shift_sample(sample_bitsize, sample);
decode_sample(sample_bitsize, sample, stream_encoding);
++sample;
}
}
(*out) += sample_count;
}
// Static utilities
void IONGSMSChunkData::decode_sample(const uint8_t sample_bitsize, auto* sample, const GnssMetadata::StreamEncoding encoding)
{
using SampleType = std::remove_pointer_t<decltype(sample)>;
switch (sample_bitsize)
{
case 2:
*sample = GnssMetadata::two_bit_look_up<SampleType>[encoding][*sample];
break;
case 3:
*sample = GnssMetadata::three_bit_look_up<SampleType>[encoding][*sample];
break;
case 4:
*sample = GnssMetadata::four_bit_look_up<SampleType>[encoding][*sample];
break;
case 5:
*sample = GnssMetadata::five_bit_look_up<SampleType>[encoding][*sample];
break;
default:
// TODO - Is this an error that can happen?
// for now we'll just do nothing, if the sample is this wide it may need no decoding
break;
}
}

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/*!
* \file ion_gsms_chunk_data.h
* \brief Holds logic for reading and decoding samples from a chunk
* \author Víctor Castillo Agüero, 2024. victorcastilloaguero(at)gmail.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 ION_GSM_CHUNK_DATA_H
#define ION_GSM_CHUNK_DATA_H
#include "GnssMetadata.h"
#include "ion_gsms_chunk_unpacking_ctx.h"
#include "ion_gsms_stream_encodings.h"
#include <gnuradio/block.h>
#include <string>
#include <vector>
#if USE_GLOG_AND_GFLAGS
#include <glog/logging.h>
#else
#include <absl/log/log.h>
#endif
inline std::size_t bits_to_item_size(const std::size_t bit_count)
{
if (bit_count <= 8)
{
return 1;
}
if (bit_count <= 16)
{
return 2;
}
if (bit_count <= 32)
{
return 4;
}
if (bit_count <= 64)
{
return 8;
}
// You are asking too much of this humble processor
LOG(ERROR) << "Item size too large (" << std::to_string(bit_count) << "), returning nonsense.";
return 1;
}
void with_word_type(const uint8_t word_size, auto&& callback)
{
switch (word_size)
{
case 1:
callback.template operator()<int8_t>();
break;
case 2:
callback.template operator()<int16_t>();
break;
case 4:
callback.template operator()<int32_t>();
break;
case 8:
callback.template operator()<int64_t>();
break;
default:
LOG(ERROR) << "Unknown word size (" << std::to_string(word_size) << "), returning nonsense.";
break;
}
}
class IONGSMSChunkData
{
public:
IONGSMSChunkData(const GnssMetadata::Chunk& chunk, const std::vector<std::string>& stream_ids, std::size_t output_stream_offset);
~IONGSMSChunkData();
IONGSMSChunkData(const IONGSMSChunkData& rhl) = delete;
IONGSMSChunkData& operator=(const IONGSMSChunkData& rhl) = delete;
IONGSMSChunkData(IONGSMSChunkData&& rhl) = delete;
IONGSMSChunkData& operator=(IONGSMSChunkData&& rhl) = delete;
std::size_t read_from_buffer(uint8_t* buffer, std::size_t offset);
void write_to_output(gr_vector_void_star& outputs, std::vector<int>& output_items);
std::size_t output_stream_count() const;
std::size_t output_stream_item_size(std::size_t stream_index) const;
std::size_t output_stream_item_rate(std::size_t stream_index) const;
private:
template <typename WT>
void unpack_words(gr_vector_void_star& outputs, std::vector<int>& output_items);
template <typename WT>
std::size_t write_stream_samples(
IONGSMSChunkUnpackingCtx<WT>& ctx,
const GnssMetadata::Lump& lump,
const GnssMetadata::IonStream& stream,
GnssMetadata::StreamEncoding stream_encoding,
void** out);
template <typename WT, typename OT>
void write_n_samples(
IONGSMSChunkUnpackingCtx<WT>& ctx,
GnssMetadata::Lump::LumpShift lump_shift,
uint8_t sample_bitsize,
std::size_t sample_count,
GnssMetadata::StreamEncoding stream_encoding,
OT** out);
static void decode_sample(uint8_t sample_bitsize, auto* sample, GnssMetadata::StreamEncoding encoding);
private:
const GnssMetadata::Chunk& chunk_;
uint8_t sizeword_;
uint8_t countwords_;
uint8_t padding_bitsize_;
std::size_t output_stream_count_;
std::vector<std::size_t> output_stream_item_size_;
std::vector<std::size_t> output_stream_item_rate_;
struct stream_metadata_t
{
const GnssMetadata::Lump& lump;
const GnssMetadata::IonStream& stream;
GnssMetadata::StreamEncoding stream_encoding;
int output_index = -1;
stream_metadata_t(
const GnssMetadata::Lump& lump_,
const GnssMetadata::IonStream& stream_,
GnssMetadata::StreamEncoding stream_encoding_,
int output_index_ = -1) : lump(lump_),
stream(stream_),
stream_encoding(stream_encoding_),
output_index(output_index_)
{
}
};
std::vector<stream_metadata_t> streams_;
void* buffer_;
};
#endif // ION_GSM_CHUNK_DATA_H

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/*!
* \file ion_gsms_chunk_unpacking_ctx.h
* \brief Holds state and provides utilities for unpacking samples from a chunk
* \author Víctor Castillo Agüero, 2024. victorcastilloaguero(at)gmail.com
*
* This is a template class, and thus, its member functions must be defined in the header file.
*
* -----------------------------------------------------------------------------
*
* 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 ION_GSM_CHUNK_UNPACKING_CTX_H
#define ION_GSM_CHUNK_UNPACKING_CTX_H
#include "GnssMetadata.h"
#include <gnuradio/block.h>
#if USE_GLOG_AND_GFLAGS
#include <glog/logging.h>
#else
#include <absl/log/log.h>
#endif
template <typename WT>
struct IONGSMSChunkUnpackingCtx
{
static constexpr uint8_t word_bitsize_ = sizeof(WT) * 8;
const GnssMetadata::Chunk::WordShift word_shift_direction_;
WT* iterator_; // Not owned by this class, MUST NOT destroy
WT current_word_;
uint8_t bitshift_ = 0;
IONGSMSChunkUnpackingCtx(
const GnssMetadata::Chunk::WordShift word_shift,
WT* data_buffer,
uint8_t data_buffer_word_count) : word_shift_direction_(word_shift)
{
if (word_shift_direction_ == GnssMetadata::Chunk::Left)
{
iterator_ = data_buffer;
}
else if (word_shift_direction_ == GnssMetadata::Chunk::Right)
{
iterator_ = &data_buffer[data_buffer_word_count];
}
advance_word(); // Initializes current_word_
}
void advance_word()
{
WT word = *iterator_;
if (word_shift_direction_ == GnssMetadata::Chunk::Left)
{
++iterator_;
}
else if (word_shift_direction_ == GnssMetadata::Chunk::Right)
{
--iterator_;
}
current_word_ = word;
}
void shift_current_word(uint8_t n)
{
if ((n % word_bitsize_) == 0)
{
for (uint8_t i = 0; i < (n / word_bitsize_); ++i)
{
advance_word();
}
return;
}
if (word_shift_direction_ == GnssMetadata::Chunk::Left)
{
current_word_ <<= n;
}
else if (word_shift_direction_ == GnssMetadata::Chunk::Right)
{
current_word_ >>= n;
}
bitshift_ += n;
if (bitshift_ >= word_bitsize_)
{
advance_word();
bitshift_ -= word_bitsize_;
}
}
void shift_padding(uint8_t n_bits)
{
if (n_bits == 0)
{
return;
}
if ((n_bits + (bitshift_ % word_bitsize_)) >= word_bitsize_)
{
const uint8_t bits_shifted = word_bitsize_ - (bitshift_ % word_bitsize_);
shift_current_word(bits_shifted);
shift_padding(n_bits - bits_shifted);
}
else
{
shift_current_word(n_bits);
}
}
template <typename OT>
void shift_sample(const uint8_t sample_bitsize, OT* output, uint8_t output_bit_offset = 0)
{
if (sample_bitsize % word_bitsize_ == 0)
{
const uint8_t words_per_sample = sample_bitsize / word_bitsize_;
for (uint8_t i = 0; i < words_per_sample; ++i)
{
if (word_shift_direction_ == GnssMetadata::Chunk::Left)
{
*output |= (current_word_ << ((words_per_sample - 1 - i) * word_bitsize_));
}
else if (word_shift_direction_ == GnssMetadata::Chunk::Right)
{
*output |= (current_word_ << (i * word_bitsize_));
// TODO - reverse bit order of sample? maybe?
}
advance_word();
}
}
else if ((sample_bitsize + (bitshift_ % word_bitsize_)) > word_bitsize_)
{
const uint8_t bits_shifted = word_bitsize_ - (bitshift_ % word_bitsize_);
if (word_shift_direction_ == GnssMetadata::Chunk::Left)
{
WT mask = ~((1 << (word_bitsize_ - bits_shifted)) - 1);
*output |= ((current_word_ & mask) >> output_bit_offset);
}
else if (word_shift_direction_ == GnssMetadata::Chunk::Right)
{
WT mask = ((1 << (bits_shifted)) - 1);
*output |= (current_word_ & mask) << output_bit_offset;
// TODO - reverse bit order of sample? maybe?
}
shift_current_word(bits_shifted);
shift_sample(sample_bitsize - bits_shifted, output, bits_shifted);
}
else
{
if (word_shift_direction_ == GnssMetadata::Chunk::Left)
{
WT mask = ~((1 << (word_bitsize_ - sample_bitsize)) - 1);
OT sample = (current_word_ & mask) >> (word_bitsize_ - sample_bitsize);
*output |= (sample) >> output_bit_offset;
}
else if (word_shift_direction_ == GnssMetadata::Chunk::Right)
{
WT mask = ((1 << (sample_bitsize)) - 1);
*output |= (current_word_ & mask) << output_bit_offset;
// TODO - reverse bit order of sample? maybe?
}
shift_current_word(sample_bitsize);
}
}
};
#endif // ION_GSM_CHUNK_UNPACKING_CTX_H

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/*!
* \file ion_gsms_metadata_handler.cc
* \brief Build instances of IONGSMSFileSource as needed given a list of stream ids
* \author Víctor Castillo Agüero, 2024. victorcastilloaguero(at)gmail.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
*
* -----------------------------------------------------------------------------
*/
#include "ion_gsms.h"
#if USE_GLOG_AND_GFLAGS
#include <glog/logging.h>
#else
#include <absl/log/log.h>
#endif
IONGSMSMetadataHandler::IONGSMSMetadataHandler(const std::string& metadata_filepath)
: metadata_filepath_(metadata_filepath)
{
load_metadata();
}
const std::string& IONGSMSMetadataHandler::metadata_filepath() const
{
return metadata_filepath_;
}
void IONGSMSMetadataHandler::load_metadata()
{
try
{
GnssMetadata::XmlProcessor xml_proc;
if (!xml_proc.Load(metadata_filepath_.c_str(), false, metadata_))
{
LOG(ERROR) << "Could not load XML metadata file:";
}
}
catch (GnssMetadata::ApiException& e)
{
LOG(ERROR) << "API Exception while loading XML metadata file: " << std::to_string(e.Error());
}
catch (std::exception& e)
{
LOG(ERROR) << "Exception while loading XML metadata file: " << e.what();
}
}
std::vector<IONGSMSFileSource::sptr> IONGSMSMetadataHandler::make_stream_sources(const ConfigurationInterface* configuration, const std::string& role, const std::vector<std::string>& stream_ids) const
{
std::vector<IONGSMSFileSource::sptr> sources{};
for (const auto& file : metadata_.Files())
{
for (const auto& lane : metadata_.Lanes())
{
if (lane.Id() == file.Lane().Id())
{
for (const auto& block : lane.Blocks())
{
bool block_done = false;
for (const auto& chunk : block.Chunks())
{
for (const auto& lump : chunk.Lumps())
{
for (const auto& stream : lump.Streams())
{
bool found = false;
for (const auto& stream_id : stream_ids)
{
if (stream_id == stream.Id())
{
found = true;
break;
}
}
if (found)
{
auto source = gnss_make_shared<IONGSMSFileSource>(
configuration,
role,
metadata_filepath_,
file,
block,
stream_ids);
sources.push_back(source);
// This file source will take care of any other matching streams in this block
// We can skip the rest of this block
block_done = true;
break;
}
}
if (block_done)
{
break;
}
}
if (block_done)
{
break;
}
}
}
break;
}
}
}
return sources;
}

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/*!
* \file ion_gsms_metadata_handler.h
* \brief Build instances of IONGSMSFileSource as needed given a list of stream ids
* \author Víctor Castillo Agüero, 2024. victorcastilloaguero(at)gmail.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 ION_GSMS_METADATA_HANDLER_H
#define ION_GSMS_METADATA_HANDLER_H
#include "GnssMetadata.h"
#include "configuration_interface.h"
#include <gnuradio/block.h>
#include <string>
#include <vector>
#if USE_GLOG_AND_GFLAGS
#include <glog/logging.h>
#else
#include <absl/log/log.h>
#endif
class IONGSMSMetadataHandler
{
public:
explicit IONGSMSMetadataHandler(const std::string& metadata_filepath);
std::vector<IONGSMSFileSource::sptr> make_stream_sources(const ConfigurationInterface* configuration, const std::string& role, const std::vector<std::string>& stream_ids) const;
public: // Getters
const std::string& metadata_filepath() const;
private: // Private methods
void load_metadata();
private: // State
std::string metadata_filepath_;
GnssMetadata::Metadata metadata_;
};
#endif // ION_GSMS_METADATA_HANDLER_H

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/*!
* \file ion_gsms_stream_encodings.h
* \brief Implements look up tables for all encodings in the standard
* \author Víctor Castillo Agüero, 2024. victorcastilloaguero(at)gmail.com
*
* These tables are taken from the stardard's official document.
*
* -----------------------------------------------------------------------------
*
* 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 ION_GSM_STREAM_ENCODINGS_H
#define ION_GSM_STREAM_ENCODINGS_H
#include <string>
#if USE_GLOG_AND_GFLAGS
#include <glog/logging.h>
#else
#include <absl/log/log.h>
#endif
namespace GnssMetadata
{
using StreamEncoding = unsigned char;
namespace StreamEncodings
{
constexpr unsigned char SIGN = 0;
constexpr unsigned char OB = 1;
constexpr unsigned char SM = 2;
constexpr unsigned char MS = 3;
constexpr unsigned char TC = 4;
constexpr unsigned char OG = 5;
constexpr unsigned char OBA = 6;
constexpr unsigned char SMA = 7;
constexpr unsigned char MSA = 8;
constexpr unsigned char TCA = 9;
constexpr unsigned char OGA = 10;
constexpr unsigned char FP = 11;
} // namespace StreamEncodings
inline StreamEncoding encoding_from_string(const std::string& str)
{
if (str == "SIGN")
{
return StreamEncodings::SIGN;
}
if (str == "OB")
{
return StreamEncodings::OB;
}
if (str == "SM")
{
return StreamEncodings::SM;
}
if (str == "MS")
{
return StreamEncodings::MS;
}
if (str == "TC")
{
return StreamEncodings::TC;
}
if (str == "OG")
{
return StreamEncodings::OG;
}
if (str == "OBA")
{
return StreamEncodings::OBA;
}
if (str == "SMA")
{
return StreamEncodings::SMA;
}
if (str == "MSA")
{
return StreamEncodings::MSA;
}
if (str == "TCA")
{
return StreamEncodings::TCA;
}
if (str == "OGA")
{
return StreamEncodings::OGA;
}
if (str == "FP")
{
return StreamEncodings::FP;
}
return 0;
}
template <typename T>
inline T two_bit_look_up[11][4]{
{}, // [0]
{-2, -1, 0, 1}, // [1 /*OB*/]
{0, 1, 0, -1}, // [2 /*SM*/]
{0, 0, 1, -1}, // [3 /*MS*/]
{0, 1, -2, -1}, // [4 /*TC*/]
{-2, -1, 1, 0}, // [5 /*OG*/]
{-3, -1, 1, 3}, // [6 /*OBA*/]
{1, 3, -1, -3}, // [7 /*SMA*/]
{1, -1, 3, -3}, // [8 /*MSA*/]
{1, 3, -3, -1}, // [9 /*TCA*/]
{-3, -1, 3, 1}, // [10 /*OGA*/]
};
template <typename T>
inline T three_bit_look_up[11][8]{
{}, // [0]
{-4, -3, -2, -1, 0, 1, 2, 3}, // [1 /*OB*/]
{0, 1, 2, 3, 0, -1, -2, -3}, // [2 /*SM*/]
{0, 0, 1, -1, 0, 0, 1, -1}, // [3 /*MS*/]
{0, 1, 2, 3, -4, -3, -2, -1}, // [4 /*TC*/]
{-4, -3, -1, -2, 3, 2, 0, 1}, // [5 /*OG*/]
{-7, -5, -3, -1, 1, 3, 5, 7}, // [6 /*OBA*/]
{1, 3, 5, 7, -1, -3, -5, -7}, // [7 /*SMA*/]
{1, -1, 3, -3, 5, -5, 7, -7}, // [8 /*MSA*/]
{1, 3, 5, 7, -7, -5, -3, -1}, // [9 /*TCA*/]
{-7, -5, -1, -3, 7, 5, 1, 3}, // [10 /*OGA*/]
};
template <typename T>
inline T four_bit_look_up[11][16]{
{}, // [0]
{-8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7}, // [1 /*OB*/]
{0, 1, 2, 3, 4, 5, 6, 7, 0, -1, -2, -3, -4, -5, -6, -7}, // [2 /*SM*/]
{0, 0, 1, -1, 0, 0, 1, -1, 0, 0, 1, -1, 0, 0, 1, -1}, // [3 /*MS*/]
{0, 1, 2, 3, 4, 5, 6, 7, -8, -7, -6, -5, -4, -3, -2, -1}, // [4 /*TC*/]
{-8, -7, -5, -6, -1, -2, -4, -3, 7, 6, 4, 5, 0, 1, 3, 2}, // [5 /*OG*/]
{-15, -13, -11, -9, -7, -5, -3, -1, 1, 3, 5, 7, 9, 11, 13, 15}, // [6 /*OBA*/]
{1, 3, 5, 7, 9, 11, 13, 15, -1, -3, -5, -7, -9, -11, -13, -15}, // [7 /*SMA*/]
{1, -1, 3, -3, 5, -5, 7, -7, 9, -9, 11, -11, 13, -13, 15, -15}, // [8 /*MSA*/]
{1, 3, 5, 7, 9, 11, 13, 15, -15, -13, -11, -9, -7, -5, -3, -1}, // [9 /*TCA*/]
{-15, -13, -9, -11, -1, -3, -7, -5, 15, 13, 9, 11, 1, 3, 7, 5}, // [10 /*OGA*/]
};
template <typename T>
inline T five_bit_look_up[11][32]{
{}, // [0]
{-16, -15, -14, -13, -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, // [1 /*OB*/]
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, -13, -14, -15}, // [2 /*SM*/]
{0, 0, 1, -1, 0, 0, 1, -1, 0, 0, 1, -1, 0, 0, 1, -1, 0, 0, 1, -1, 0, 0, 1, -1, 0, 0, 1, -1, 0, 0, 1, -1}, // [3 /*MS*/]
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, -16, -15, -14, -13, -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1}, // [4 /*TC*/]
{-16, -15, -13, -14, -9, -10, -12, -11, -1, -2, -4, -3, -8, -7, -5, -6, 15, 14, 12, 13, 8, 9, 11, 10, 0, 1, 3, 2, 7, 6, 4, 5}, // [5 /*OG*/]
{-31, -29, -27, -25, -23, -21, -19, -17, -15, -13, -11, -9, -7, -5, -3, -1, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31}, // [6 /*OBA*/]
{1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, -1, -3, -5, -7, -9, -11, -13, -15, -17, -19, -21, -23, -25, -27, -29, -31}, // [7 /*SMA*/]
{1, -1, 3, -3, 5, -5, 7, -7, 9, -9, 11, -11, 13, -13, 15, -15, 17, -17, 19, -19, 21, -21, 23, -23, 25, -25, 27, -27, 29, -29, 31, -31}, // [8 /*MSA*/]
{1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, -31, -29, -27, -25, -23, -21, -19, -17, -15, -13, -11, -9, -7, -5, -3, -1}, // [9 /*TCA*/]
{-31, -29, -25, -27, -17, -19, -23, -21, -1, -3, -7, -5, -15, -13, -9, -11, 31, 29, 25, 27, 17, 19, 23, 21, 1, 3, 7, 5, 15, 13, 9, 11}, // [10 /*OGA*/]
};
} // namespace GnssMetadata
#endif // ION_GSM_STREAM_ENCODINGS_H

4
src/core/receiver/CMakeLists.txt
View File

@ -70,6 +70,10 @@ if(ENABLE_FPGA)
target_compile_definitions(core_receiver PUBLIC -DENABLE_FPGA=1)
endif()
if(ENABLE_ION)
target_compile_definitions(core_receiver PRIVATE -DENABLE_ION_SOURCE=1)
endif()
if(GNURADIO_USES_STD_POINTERS)
target_compile_definitions(core_receiver PUBLIC -DGNURADIO_USES_STD_POINTERS=1)
endif()

14
src/core/receiver/gnss_block_factory.cc
View File

@ -196,6 +196,11 @@
#include "gps_l1_ca_dll_pll_tracking_gpu.h"
#endif
#if ENABLE_ION_SOURCE
#undef Owner
#include "ion_gsms_signal_source.h"
#endif
using namespace std::string_literals;
namespace
@ -759,7 +764,14 @@ std::unique_ptr<GNSSBlockInterface> GNSSBlockFactory::GetBlock(
block = std::move(block_);
}
#endif
#if ENABLE_ION_SOURCE
else if (implementation == "ION_GSMS_Signal_Source")
{
std::unique_ptr<GNSSBlockInterface> block_ = std::make_unique<IONGSMSSignalSource>(configuration, role, in_streams,
out_streams, queue);
block = std::move(block_);
}
#endif
#if RAW_ARRAY_DRIVER
else if (implementation == "Raw_Array_Signal_Source")
{