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gr-gmr1: Add special file sink to record RACH in text format 

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
This commit is contained in:
Sylvain Munaut 2015-02-22 20:42:49 +01:00
parent 98fec6650d
commit 2efc4ddc4e
8 changed files with 307 additions and 0 deletions
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1
gr-gmr1/grc/CMakeLists.txt
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@ -22,5 +22,6 @@ install(FILES
gsmtap_sink.xml
rach_demod.xml
rach_detect_fft.xml
rach_file_sink.xml
DESTINATION share/gnuradio/grc/blocks
)

29
gr-gmr1/grc/rach_file_sink.xml Normal file
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@ -0,0 +1,29 @@
<?xml version="1.0"?>
<block>
<name>RACH File Sink</name>
<key>rach_file_sink</key>
<category>GMR-1</category>
<import>from gnuradio import gmr1</import>
<make>gmr1.rach_file_sink($filename, $center_freq, $sample_rate)</make>
<param>
<name>Filename</name>
<key>filename</key>
<type>string</type>
</param>
<param>
<name>Center Frequency</name>
<key>center_freq</key>
<value>0</value>
<type>float</type>
</param>
<param>
<name>Sample Rate</name>
<key>sample_rate</key>
<value>0</value>
<type>float</type>
</param>
<sink>
<name>pdus</name>
<type>message</type>
</sink>
</block>

1
gr-gmr1/include/gnuradio/gmr1/CMakeLists.txt
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@ -26,5 +26,6 @@ install(FILES
gsmtap_sink.h
rach_demod.h
rach_detect_fft.h
rach_file_sink.h
DESTINATION include/gnuradio/gmr1
)

56
gr-gmr1/include/gnuradio/gmr1/rach_file_sink.h Normal file
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@ -0,0 +1,56 @@
/* -*- c++ -*- */
/*
* Copyright 2015 Sylvain Munaut <tnt@246tNt.com>
*
* This 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, or (at your option)
* any later version.
*
* This software 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 this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_GR_GMR1_RACH_FILE_SINK_H
#define INCLUDED_GR_GMR1_RACH_FILE_SINK_H
#include <gnuradio/gmr1/api.h>
#include <gnuradio/blocks/pdu.h>
#include <gnuradio/block.h>
namespace gr {
namespace gmr1 {
/*!
* \brief
* \ingroup
*/
class GR_GMR1_API rach_file_sink : virtual public block
{
public:
typedef boost::shared_ptr<rach_file_sink> sptr;
static sptr make(const std::string &filename,
const double center_freq, const double sample_rate);
virtual std::string filename() const = 0;
virtual double center_freq() const = 0;
virtual double sample_rate() const = 0;
virtual void set_center_freq(const double center_freq) = 0;
virtual void set_sample_rate(const double sample_rate) = 0;
};
} // namespace gmr1
} // namespace gr
#endif /* INCLUDED_GR_GMR1_RACH_FILE_SINK_H */

1
gr-gmr1/lib/CMakeLists.txt
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@ -46,6 +46,7 @@ list(APPEND gmr1_sources
gsmtap_sink_impl.cc
rach_demod_impl.cc
rach_detect_fft_impl.cc
rach_file_sink_impl.cc
)
add_library(gnuradio-gmr1 SHARED ${gmr1_sources})

149
gr-gmr1/lib/rach_file_sink_impl.cc Normal file
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@ -0,0 +1,149 @@
/* -*- c++ -*- */
/*
* Copyright 2015 Sylvain Munaut <tnt@246tNt.com>
*
* This 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, or (at your option)
* any later version.
*
* This software 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 this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <cstdio>
#include <gnuradio/io_signature.h>
#include "rach_file_sink_impl.h"
namespace gr {
namespace gmr1 {
rach_file_sink::sptr
rach_file_sink::make(const std::string &filename,
const double center_freq, const double sample_rate)
{
return gnuradio::get_initial_sptr(
new rach_file_sink_impl(filename, center_freq, sample_rate)
);
}
rach_file_sink_impl::rach_file_sink_impl(const std::string &filename,
const double center_freq,
const double sample_rate)
: gr::block("rach_file_sink",
io_signature::make(0, 0, 0),
io_signature::make(0, 0, 0)),
d_filename(filename),
d_center_freq(center_freq), d_sample_rate(sample_rate)
{
message_port_register_in(PDU_PORT_ID);
set_msg_handler(PDU_PORT_ID, boost::bind(&rach_file_sink_impl::send_pdu, this, _1));
this->d_fh = fopen(filename.c_str(), "a");
if (!this->d_fh)
throw std::runtime_error("Unable to open output file");
}
rach_file_sink_impl::~rach_file_sink_impl()
{
fclose(this->d_fh);
}
std::string
rach_file_sink_impl::filename() const
{
return this->d_filename;
}
double
rach_file_sink_impl::center_freq() const
{
return this->d_center_freq;
}
double
rach_file_sink_impl::sample_rate() const
{
return this->d_sample_rate;
}
void
rach_file_sink_impl::set_center_freq(const double center_freq)
{
this->d_center_freq = center_freq;
}
void
rach_file_sink_impl::set_sample_rate(const double sample_rate)
{
this->d_sample_rate = sample_rate;
}
bool
rach_file_sink_impl::start()
{
/* Nothing yet */
}
bool
rach_file_sink_impl::stop()
{
fflush(this->d_fh);
}
void
rach_file_sink_impl::send_pdu(pmt::pmt_t pdu)
{
static const pmt::pmt_t key_sb_mask = pmt::string_to_symbol("sb_mask");
static const pmt::pmt_t key_freq = pmt::string_to_symbol("freq");
pmt::pmt_t meta = pmt::car(pdu);
pmt::pmt_t vector = pmt::cdr(pdu);
size_t len = pmt::length(vector);
size_t offset(0);
const uint8_t* rach = (const uint8_t*) pmt::uniform_vector_elements(vector, offset);
/* Validate */
if (!is_dict(meta) ||
!dict_has_key(meta, key_sb_mask) ||
!dict_has_key(meta, key_freq))
throw std::runtime_error("Invalid RACH PDU");
/* Grab SB_Mask & freq */
uint8_t sb_mask = pmt::to_long(pmt::dict_ref(meta, key_sb_mask, pmt::PMT_NIL));
double freq = pmt::to_double(pmt::dict_ref(meta, key_freq, pmt::PMT_NIL));
fprintf(this->d_fh, "%02hhx %.17g %.17g ",
sb_mask,
freq,
this->d_center_freq + (this->d_sample_rate * freq / (2.0 * M_PI))
);
/* Raw bytes */
for (int i=0; i<len; i++)
fprintf(this->d_fh, "%02hhx", rach[i]);
/* EOL */
fprintf(this->d_fh, "\n");
}
} // namespace gmr1
} // namespace gr

66
gr-gmr1/lib/rach_file_sink_impl.h Normal file
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@ -0,0 +1,66 @@
/* -*- c++ -*- */
/*
* Copyright 2015 Sylvain Munaut <tnt@246tNt.com>
*
* This 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, or (at your option)
* any later version.
*
* This software 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 this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_GR_GMR1_RACH_FILE_SINK_IMPL_H
#define INCLUDED_GR_GMR1_RACH_FILE_SINK_IMPL_H
#include <gnuradio/gmr1/rach_file_sink.h>
#include <cstdio>
namespace gr {
namespace gmr1 {
/*!
* \brief
* \ingroup gmr1
*/
class rach_file_sink_impl : public rach_file_sink
{
private:
std::string d_filename;
double d_center_freq;
double d_sample_rate;
FILE *d_fh;
void send_pdu(pmt::pmt_t pdu);
public:
rach_file_sink_impl(const std::string &filename,
const double center_freq, const double sample_rate);
virtual ~rach_file_sink_impl();
std::string filename() const;
double center_freq() const;
double sample_rate() const;
void set_center_freq(const double center_freq);
void set_sample_rate(const double sample_rate);
bool start();
bool stop();
};
} // namespace gmr1
} // namespace gr
#endif /* INCLUDED_GR_GMR1_RACH_FILE_SINK_IMPL_H */

4
gr-gmr1/swig/gmr1_swig.i
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@ -13,6 +13,7 @@
#include "gnuradio/gmr1/gsmtap_sink.h"
#include "gnuradio/gmr1/rach_demod.h"
#include "gnuradio/gmr1/rach_detect_fft.h"
#include "gnuradio/gmr1/rach_file_sink.h"
%}
%include "gnuradio/gmr1/burst_to_tagged_stream.h"
@ -26,3 +27,6 @@ GR_SWIG_BLOCK_MAGIC2(gmr1, rach_demod);
%include "gnuradio/gmr1/rach_detect_fft.h"
GR_SWIG_BLOCK_MAGIC2(gmr1, rach_detect_fft);
%include "gnuradio/gmr1/rach_file_sink.h"
GR_SWIG_BLOCK_MAGIC2(gmr1, rach_file_sink);