2012-09-30 18:12:48 +00:00
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/* -*- c++ -*- */
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/*
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* Copyright 2012 Dimitri Stolnikov <horiz0n@gmx.net>
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* Copyright 2012 Steve Markgraf <steve@steve-m.de>
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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/*
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* config.h is generated by configure. It contains the results
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* of probing for features, options etc. It should be the first
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* file included in your .cc file.
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*/
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#ifdef HAVE_CONFIG_H
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2013-03-12 18:38:11 +00:00
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#include "config.h"
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2012-09-30 18:12:48 +00:00
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#endif
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#include "miri_source_c.h"
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#include <gr_io_signature.h>
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#include <boost/assign.hpp>
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#include <boost/format.hpp>
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#include <stdexcept>
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#include <iostream>
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#include <stdio.h>
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#include <mirisdr.h>
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#include <osmosdr_arg_helpers.h>
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using namespace boost::assign;
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#define BUF_SIZE 2304 * 8 * 2
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#define BUF_NUM 32
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#define BUF_SKIP 1 // buffers to skip due to garbage
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#define BYTES_PER_SAMPLE 4 // mirisdr device delivers 16 bit signed IQ data
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// containing 12 bits of information
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/*
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* Create a new instance of miri_source_c and return
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* a boost shared_ptr. This is effectively the public constructor.
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*/
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miri_source_c_sptr
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make_miri_source_c (const std::string &args)
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{
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return gnuradio::get_initial_sptr(new miri_source_c (args));
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}
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/*
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* Specify constraints on number of input and output streams.
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* This info is used to construct the input and output signatures
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* (2nd & 3rd args to gr_block's constructor). The input and
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* output signatures are used by the runtime system to
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* check that a valid number and type of inputs and outputs
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* are connected to this block. In this case, we accept
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* only 0 input and 1 output.
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*/
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static const int MIN_IN = 0; // mininum number of input streams
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static const int MAX_IN = 0; // maximum number of input streams
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static const int MIN_OUT = 1; // minimum number of output streams
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static const int MAX_OUT = 1; // maximum number of output streams
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/*
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* The private constructor
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*/
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miri_source_c::miri_source_c (const std::string &args)
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: gr_sync_block ("miri_source_c",
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gr_make_io_signature (MIN_IN, MAX_IN, sizeof (gr_complex)),
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gr_make_io_signature (MIN_OUT, MAX_OUT, sizeof (gr_complex))),
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_running(true),
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_auto_gain(false),
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_skipped(0)
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{
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int ret;
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unsigned int dev_index = 0;
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dict_t dict = params_to_dict(args);
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if (dict.count("miri"))
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dev_index = boost::lexical_cast< unsigned int >( dict["miri"] );
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2012-11-28 20:07:34 +00:00
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_buf_num = _buf_head = _buf_used = _buf_offset = 0;
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2012-09-30 18:12:48 +00:00
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_samp_avail = BUF_SIZE / BYTES_PER_SAMPLE;
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2012-11-28 20:07:34 +00:00
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if (dict.count("buffers"))
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_buf_num = boost::lexical_cast< unsigned int >( dict["buffers"] );
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if (0 == _buf_num)
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_buf_num = BUF_NUM;
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if ( BUF_NUM != _buf_num ) {
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2012-09-30 18:12:48 +00:00
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std::cerr << "Using " << _buf_num << " buffers of size " << BUF_SIZE << "."
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<< std::endl;
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}
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if ( dev_index >= mirisdr_get_device_count() )
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throw std::runtime_error("Wrong mirisdr device index given.");
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std::cerr << "Using device #" << dev_index << ": "
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<< mirisdr_get_device_name(dev_index)
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<< std::endl;
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_dev = NULL;
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ret = mirisdr_open( &_dev, dev_index );
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if (ret < 0)
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throw std::runtime_error("Failed to open mirisdr device.");
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#if 0
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ret = mirisdr_set_sample_rate( _dev, 500000 );
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if (ret < 0)
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throw std::runtime_error("Failed to set default samplerate.");
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ret = mirisdr_set_tuner_gain_mode(_dev, int(!_auto_gain));
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if (ret < 0)
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throw std::runtime_error("Failed to enable manual gain mode.");
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#endif
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ret = mirisdr_reset_buffer( _dev );
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if (ret < 0)
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throw std::runtime_error("Failed to reset usb buffers.");
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_buf = (unsigned short **) malloc(_buf_num * sizeof(unsigned short *));
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2012-10-16 16:27:56 +00:00
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_buf_lens = (unsigned int *) malloc(_buf_num * sizeof(unsigned int));
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2012-09-30 18:12:48 +00:00
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2012-10-16 16:27:56 +00:00
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if (_buf && _buf_lens) {
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2012-09-30 18:12:48 +00:00
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for(unsigned int i = 0; i < _buf_num; ++i)
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_buf[i] = (unsigned short *) malloc(BUF_SIZE);
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}
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_thread = gruel::thread(_mirisdr_wait, this);
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}
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/*
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* Our virtual destructor.
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*/
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miri_source_c::~miri_source_c ()
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{
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if (_dev) {
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_running = false;
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mirisdr_cancel_async( _dev );
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_thread.join();
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mirisdr_close( _dev );
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_dev = NULL;
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}
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if (_buf) {
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for(unsigned int i = 0; i < _buf_num; ++i) {
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if (_buf[i])
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free(_buf[i]);
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}
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free(_buf);
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_buf = NULL;
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2012-10-16 16:27:56 +00:00
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free(_buf_lens);
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_buf_lens = NULL;
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2012-09-30 18:12:48 +00:00
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}
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}
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void miri_source_c::_mirisdr_callback(unsigned char *buf, uint32_t len, void *ctx)
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{
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miri_source_c *obj = (miri_source_c *)ctx;
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obj->mirisdr_callback(buf, len);
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}
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void miri_source_c::mirisdr_callback(unsigned char *buf, uint32_t len)
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{
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if (_skipped < BUF_SKIP) {
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_skipped++;
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return;
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}
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{
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boost::mutex::scoped_lock lock( _buf_mutex );
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2012-10-16 16:27:56 +00:00
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if (len > BUF_SIZE)
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throw std::runtime_error("Buffer too small.");
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2012-09-30 18:12:48 +00:00
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int buf_tail = (_buf_head + _buf_used) % _buf_num;
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memcpy(_buf[buf_tail], buf, len);
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2012-10-16 16:27:56 +00:00
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_buf_lens[buf_tail] = len;
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2012-09-30 18:12:48 +00:00
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if (_buf_used == _buf_num) {
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std::cerr << "O" << std::flush;
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_buf_head = (_buf_head + 1) % _buf_num;
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} else {
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_buf_used++;
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}
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}
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_buf_cond.notify_one();
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}
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void miri_source_c::_mirisdr_wait(miri_source_c *obj)
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{
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obj->mirisdr_wait();
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}
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void miri_source_c::mirisdr_wait()
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{
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int ret = mirisdr_read_async( _dev, _mirisdr_callback, (void *)this, 0, BUF_SIZE );
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_running = false;
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if ( ret != 0 )
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std::cerr << "mirisdr_read_async returned with " << ret << std::endl;
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2013-01-20 14:38:56 +00:00
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_buf_cond.notify_one();
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2012-09-30 18:12:48 +00:00
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}
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int miri_source_c::work( int noutput_items,
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gr_vector_const_void_star &input_items,
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gr_vector_void_star &output_items )
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{
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gr_complex *out = (gr_complex *)output_items[0];
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{
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boost::mutex::scoped_lock lock( _buf_mutex );
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while (_buf_used < 3 && _running) // collect at least 3 buffers
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_buf_cond.wait( lock );
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}
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if (!_running)
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return WORK_DONE;
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short *buf = (short *)_buf[_buf_head] + _buf_offset;
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if (noutput_items <= _samp_avail) {
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for (int i = 0; i < noutput_items; i++)
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*out++ = gr_complex( float(*(buf + i * 2 + 0)) * (1.0f/4096.0f),
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float(*(buf + i * 2 + 1)) * (1.0f/4096.0f) );
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_buf_offset += noutput_items * 2;
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_samp_avail -= noutput_items;
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} else {
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for (int i = 0; i < _samp_avail; i++)
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*out++ = gr_complex( float(*(buf + i * 2 + 0)) * (1.0f/4096.0f),
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float(*(buf + i * 2 + 1)) * (1.0f/4096.0f) );
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{
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boost::mutex::scoped_lock lock( _buf_mutex );
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_buf_head = (_buf_head + 1) % _buf_num;
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_buf_used--;
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}
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buf = (short *)_buf[_buf_head];
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int remaining = noutput_items - _samp_avail;
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for (int i = 0; i < remaining; i++)
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*out++ = gr_complex( float(*(buf + i * 2 + 0)) * (1.0f/4096.0f),
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float(*(buf + i * 2 + 1)) * (1.0f/4096.0f) );
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_buf_offset = remaining * 2;
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2012-10-16 16:27:56 +00:00
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_samp_avail = (_buf_lens[_buf_head] / BYTES_PER_SAMPLE) - remaining;
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2012-09-30 18:12:48 +00:00
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}
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return noutput_items;
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}
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std::vector<std::string> miri_source_c::get_devices()
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{
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std::vector<std::string> devices;
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for (unsigned int i = 0; i < mirisdr_get_device_count(); i++) {
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std::string args = "miri=" + boost::lexical_cast< std::string >( i );
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args += ",label='" + std::string(mirisdr_get_device_name( i )) + "'";
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devices.push_back( args );
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}
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return devices;
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}
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size_t miri_source_c::get_num_channels()
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{
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return 1;
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}
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osmosdr::meta_range_t miri_source_c::get_sample_rates()
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{
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osmosdr::meta_range_t range;
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2012-10-14 17:00:26 +00:00
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range += osmosdr::range_t( 8000000 ); // known to work
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2012-09-30 18:12:48 +00:00
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return range;
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}
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double miri_source_c::set_sample_rate(double rate)
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{
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if (_dev) {
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mirisdr_set_sample_rate( _dev, (uint32_t)rate );
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}
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return get_sample_rate();
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}
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double miri_source_c::get_sample_rate()
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{
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if (_dev)
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return (double)mirisdr_get_sample_rate( _dev );
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return 0;
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}
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osmosdr::freq_range_t miri_source_c::get_freq_range( size_t chan )
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{
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osmosdr::freq_range_t range;
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range += osmosdr::range_t( 150e3, 30e6 ); /* LW/MW/SW (150 kHz - 30 MHz) */
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range += osmosdr::range_t( 64e6, 108e6 ); /* VHF Band II (64 - 108 MHz) */
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range += osmosdr::range_t( 162e6, 240e6 ); /* Band III (162 - 240 MHz) */
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range += osmosdr::range_t( 470e6, 960e6 ); /* Band IV/V (470 - 960 MHz) */
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range += osmosdr::range_t( 1450e6, 1675e6 ); /* L-Band (1450 - 1675 MHz) */
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return range;
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}
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double miri_source_c::set_center_freq( double freq, size_t chan )
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{
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if (_dev)
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mirisdr_set_center_freq( _dev, (uint32_t)freq );
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return get_center_freq( chan );
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}
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double miri_source_c::get_center_freq( size_t chan )
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{
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if (_dev)
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return (double)mirisdr_get_center_freq( _dev );
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return 0;
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}
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double miri_source_c::set_freq_corr( double ppm, size_t chan )
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{
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return get_freq_corr( chan );
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}
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double miri_source_c::get_freq_corr( size_t chan )
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{
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return 0;
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}
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std::vector<std::string> miri_source_c::get_gain_names( size_t chan )
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{
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std::vector< std::string > gains;
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gains += "LNA";
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return gains;
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}
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osmosdr::gain_range_t miri_source_c::get_gain_range( size_t chan )
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{
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osmosdr::gain_range_t range;
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|
|
|
|
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if (_dev) {
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int count = mirisdr_get_tuner_gains(_dev, NULL);
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if (count > 0) {
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int* gains = new int[ count ];
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count = mirisdr_get_tuner_gains(_dev, gains);
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for (int i = 0; i < count; i++)
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range += osmosdr::range_t( gains[i] / 10.0 );
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delete[] gains;
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}
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}
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return range;
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|
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}
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|
osmosdr::gain_range_t miri_source_c::get_gain_range( const std::string & name, size_t chan )
|
|
|
|
{
|
|
|
|
return get_gain_range( chan );
|
|
|
|
}
|
|
|
|
|
|
|
|
bool miri_source_c::set_gain_mode( bool automatic, size_t chan )
|
|
|
|
{
|
|
|
|
if (_dev) {
|
|
|
|
if (!mirisdr_set_tuner_gain_mode(_dev, int(!automatic))) {
|
|
|
|
_auto_gain = automatic;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return get_gain_mode(chan);
|
|
|
|
}
|
|
|
|
|
|
|
|
bool miri_source_c::get_gain_mode( size_t chan )
|
|
|
|
{
|
|
|
|
return _auto_gain;
|
|
|
|
}
|
|
|
|
|
|
|
|
double miri_source_c::set_gain( double gain, size_t chan )
|
|
|
|
{
|
|
|
|
osmosdr::gain_range_t rf_gains = miri_source_c::get_gain_range( chan );
|
|
|
|
|
|
|
|
if (_dev) {
|
|
|
|
mirisdr_set_tuner_gain( _dev, int(rf_gains.clip(gain) * 10.0) );
|
|
|
|
}
|
|
|
|
|
|
|
|
return get_gain( chan );
|
|
|
|
}
|
|
|
|
|
|
|
|
double miri_source_c::set_gain( double gain, const std::string & name, size_t chan)
|
|
|
|
{
|
|
|
|
return set_gain( gain, chan );
|
|
|
|
}
|
|
|
|
|
|
|
|
double miri_source_c::get_gain( size_t chan )
|
|
|
|
{
|
|
|
|
if ( _dev )
|
|
|
|
return ((double)mirisdr_get_tuner_gain( _dev )) / 10.0;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
double miri_source_c::get_gain( const std::string & name, size_t chan )
|
|
|
|
{
|
|
|
|
return get_gain( chan );
|
|
|
|
}
|
|
|
|
|
|
|
|
std::vector< std::string > miri_source_c::get_antennas( size_t chan )
|
|
|
|
{
|
|
|
|
std::vector< std::string > antennas;
|
|
|
|
|
|
|
|
antennas += get_antenna( chan );
|
|
|
|
|
|
|
|
return antennas;
|
|
|
|
}
|
|
|
|
|
|
|
|
std::string miri_source_c::set_antenna( const std::string & antenna, size_t chan )
|
|
|
|
{
|
|
|
|
return get_antenna( chan );
|
|
|
|
}
|
|
|
|
|
|
|
|
std::string miri_source_c::get_antenna( size_t chan )
|
|
|
|
{
|
|
|
|
return "ANT";
|
|
|
|
}
|