forked from sdr/gr-osmosdr
445 lines
11 KiB
C++
445 lines
11 KiB
C++
/* -*- c++ -*- */
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/*
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* Copyright 2013 Dimitri Stolnikov <horiz0n@gmx.net>
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* Copyright 2020 Clayton Smith <argilo@gmail.com>
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*
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* gr-osmosdr 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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* gr-osmosdr 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 gr-osmosdr; 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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#include "config.h"
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#endif
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#include <stdexcept>
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#include <iostream>
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#include <gnuradio/io_signature.h>
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#include "hackrf_source_c.h"
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#include "arg_helpers.h"
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hackrf_source_c_sptr make_hackrf_source_c (const std::string & args)
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{
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return gnuradio::get_initial_sptr(new hackrf_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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hackrf_source_c::hackrf_source_c (const std::string &args)
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: gr::sync_block ("hackrf_source_c",
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gr::io_signature::make(MIN_IN, MAX_IN, sizeof (gr_complex)),
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gr::io_signature::make(MIN_OUT, MAX_OUT, sizeof (gr_complex))),
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hackrf_common::hackrf_common(args),
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_buf(NULL),
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_lna_gain(0),
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_vga_gain(0)
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{
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dict_t dict = params_to_dict(args);
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_buf_num = _buf_len = _buf_head = _buf_used = _buf_offset = 0;
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if (dict.count("buffers"))
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_buf_num = std::stoi(dict["buffers"]);
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// if (dict.count("buflen"))
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// _buf_len = std::stoi(dict["buflen"]);
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if (0 == _buf_num)
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_buf_num = BUF_NUM;
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if (0 == _buf_len || _buf_len % 512 != 0) /* len must be multiple of 512 */
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_buf_len = BUF_LEN;
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_samp_avail = _buf_len / BYTES_PER_SAMPLE;
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// create a lookup table for gr_complex values
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for (unsigned int i = 0; i <= 0xff; i++) {
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_lut.push_back( float(int8_t(i)) * (1.0f/128.0f) );
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}
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if ( BUF_NUM != _buf_num || BUF_LEN != _buf_len ) {
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std::cerr << "Using " << _buf_num << " buffers of size " << _buf_len << "."
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<< std::endl;
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}
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set_center_freq( (get_freq_range().start() + get_freq_range().stop()) / 2.0 );
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set_sample_rate( get_sample_rates().start() );
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set_bandwidth( 0 );
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set_gain( 0 ); /* disable AMP gain stage by default to protect full sprectrum pre-amp from physical damage */
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set_if_gain( 16 ); /* preset to a reasonable default (non-GRC use case) */
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set_bb_gain( 20 ); /* preset to a reasonable default (non-GRC use case) */
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// Check device args to find out if bias/phantom power is desired.
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if ( dict.count("bias") ) {
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hackrf_common::set_bias(dict["bias"] == "1");
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}
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_buf = (unsigned char **) malloc(_buf_num * sizeof(unsigned char *));
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if (_buf) {
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for(unsigned int i = 0; i < _buf_num; ++i)
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_buf[i] = (unsigned char *) malloc(_buf_len);
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}
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}
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/*
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* Our virtual destructor.
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*/
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hackrf_source_c::~hackrf_source_c ()
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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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free(_buf[i]);
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}
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free(_buf);
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_buf = NULL;
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}
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}
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int hackrf_source_c::_hackrf_rx_callback(hackrf_transfer *transfer)
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{
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hackrf_source_c *obj = (hackrf_source_c *)transfer->rx_ctx;
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return obj->hackrf_rx_callback(transfer->buffer, transfer->valid_length);
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}
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int hackrf_source_c::hackrf_rx_callback(unsigned char *buf, uint32_t len)
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{
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{
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std::lock_guard<std::mutex> lock(_buf_mutex);
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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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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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return 0; // TODO: return -1 on error/stop
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}
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bool hackrf_source_c::start()
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{
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if ( ! _dev.get() )
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return false;
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hackrf_common::start();
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int ret = hackrf_start_rx( _dev.get(), _hackrf_rx_callback, (void *)this );
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if ( ret != HACKRF_SUCCESS ) {
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std::cerr << "Failed to start RX streaming (" << ret << ")" << std::endl;
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return false;
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}
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return true;
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}
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bool hackrf_source_c::stop()
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{
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if ( ! _dev.get() )
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return false;
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hackrf_common::stop();
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int ret = hackrf_stop_rx( _dev.get() );
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if ( ret != HACKRF_SUCCESS ) {
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std::cerr << "Failed to stop RX streaming (" << ret << ")" << std::endl;
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return false;
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}
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return true;
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}
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int hackrf_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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bool running = false;
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if ( _dev.get() )
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running = (hackrf_is_streaming( _dev.get() ) == HACKRF_TRUE);
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{
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std::unique_lock<std::mutex> 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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const uint8_t *buf = _buf[_buf_head] + _buf_offset * BYTES_PER_SAMPLE;
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#define TO_COMPLEX(p) gr_complex( _lut[(p)[0]], _lut[(p)[1]] )
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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++ = TO_COMPLEX( buf + i*BYTES_PER_SAMPLE );
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_buf_offset += noutput_items;
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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++ = TO_COMPLEX( buf + i*BYTES_PER_SAMPLE );
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{
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std::lock_guard<std::mutex> 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 = _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++ = TO_COMPLEX( buf + i*BYTES_PER_SAMPLE );
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_buf_offset = remaining;
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_samp_avail = (_buf_len / BYTES_PER_SAMPLE) - remaining;
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}
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return noutput_items;
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}
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std::vector<std::string> hackrf_source_c::get_devices()
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{
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return hackrf_common::get_devices();
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}
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size_t hackrf_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 hackrf_source_c::get_sample_rates()
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{
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return hackrf_common::get_sample_rates();
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}
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double hackrf_source_c::set_sample_rate( double rate )
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{
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return hackrf_common::set_sample_rate(rate);
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}
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double hackrf_source_c::get_sample_rate()
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{
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return hackrf_common::get_sample_rate();
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}
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osmosdr::freq_range_t hackrf_source_c::get_freq_range( size_t chan )
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{
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return hackrf_common::get_freq_range(chan);
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}
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double hackrf_source_c::set_center_freq( double freq, size_t chan )
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{
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return hackrf_common::set_center_freq(freq, chan);
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}
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double hackrf_source_c::get_center_freq( size_t chan )
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{
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return hackrf_common::get_center_freq(chan);
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}
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double hackrf_source_c::set_freq_corr( double ppm, size_t chan )
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{
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return hackrf_common::set_freq_corr(ppm, chan);
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}
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double hackrf_source_c::get_freq_corr( size_t chan )
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{
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return hackrf_common::get_freq_corr(chan);
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}
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std::vector<std::string> hackrf_source_c::get_gain_names( size_t chan )
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{
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return { "RF", "IF", "BB" };
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}
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osmosdr::gain_range_t hackrf_source_c::get_gain_range( size_t chan )
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{
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return get_gain_range( "RF", chan );
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}
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osmosdr::gain_range_t hackrf_source_c::get_gain_range( const std::string & name, size_t chan )
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{
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if ( "RF" == name ) {
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return osmosdr::gain_range_t( 0, 14, 14 );
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}
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if ( "IF" == name ) {
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return osmosdr::gain_range_t( 0, 40, 8 );
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}
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if ( "BB" == name ) {
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return osmosdr::gain_range_t( 0, 62, 2 );
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}
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return osmosdr::gain_range_t();
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}
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bool hackrf_source_c::set_gain_mode( bool automatic, size_t chan )
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{
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return hackrf_common::set_gain_mode(automatic, chan);
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}
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bool hackrf_source_c::get_gain_mode( size_t chan )
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{
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return hackrf_common::get_gain_mode(chan);
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}
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double hackrf_source_c::set_gain( double gain, size_t chan )
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{
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return hackrf_common::set_gain(gain, chan);
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}
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double hackrf_source_c::set_gain( double gain, const std::string & name, size_t chan)
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{
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if ( "RF" == name ) {
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return set_gain( gain, chan );
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}
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if ( "IF" == name ) {
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return set_if_gain( gain, chan );
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}
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if ( "BB" == name ) {
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return set_bb_gain( gain, chan );
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}
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return set_gain( gain, chan );
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}
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double hackrf_source_c::get_gain( size_t chan )
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{
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return hackrf_common::get_gain(chan);
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}
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double hackrf_source_c::get_gain( const std::string & name, size_t chan )
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{
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if ( "RF" == name ) {
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return get_gain( chan );
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}
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if ( "IF" == name ) {
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return _lna_gain;
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}
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if ( "BB" == name ) {
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return _vga_gain;
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}
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return get_gain( chan );
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}
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double hackrf_source_c::set_if_gain(double gain, size_t chan)
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{
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int ret;
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osmosdr::gain_range_t rf_gains = get_gain_range( "IF", chan );
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if (_dev.get()) {
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double clip_gain = rf_gains.clip( gain, true );
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ret = hackrf_set_lna_gain( _dev.get(), uint32_t(clip_gain) );
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if ( HACKRF_SUCCESS == ret ) {
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_lna_gain = clip_gain;
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} else {
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HACKRF_THROW_ON_ERROR( ret, HACKRF_FUNC_STR( "hackrf_set_lna_gain", clip_gain ) )
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}
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}
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return _lna_gain;
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}
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double hackrf_source_c::set_bb_gain( double gain, size_t chan )
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{
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int ret;
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osmosdr::gain_range_t if_gains = get_gain_range( "BB", chan );
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if (_dev.get()) {
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double clip_gain = if_gains.clip( gain, true );
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ret = hackrf_set_vga_gain( _dev.get(), uint32_t(clip_gain) );
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if ( HACKRF_SUCCESS == ret ) {
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_vga_gain = clip_gain;
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} else {
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HACKRF_THROW_ON_ERROR( ret, HACKRF_FUNC_STR( "hackrf_set_vga_gain", clip_gain ) )
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}
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}
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return _vga_gain;
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}
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std::vector< std::string > hackrf_source_c::get_antennas( size_t chan )
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{
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return hackrf_common::get_antennas(chan);
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}
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std::string hackrf_source_c::set_antenna( const std::string & antenna, size_t chan )
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{
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return hackrf_common::set_antenna(antenna, chan);
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}
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std::string hackrf_source_c::get_antenna( size_t chan )
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{
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return hackrf_common::get_antenna(chan);
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}
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double hackrf_source_c::set_bandwidth( double bandwidth, size_t chan )
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{
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return hackrf_common::set_bandwidth(bandwidth, chan);
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}
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double hackrf_source_c::get_bandwidth( size_t chan )
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{
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return hackrf_common::get_bandwidth(chan);
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}
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osmosdr::freq_range_t hackrf_source_c::get_bandwidth_range( size_t chan )
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{
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return hackrf_common::get_bandwidth_range(chan);
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}
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