sdrangel/plugins/samplesource/airspyhf/airspyhfworker.cpp

181 wiersze
5.0 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2018 Edouard Griffiths, F4EXB //
// //
// This program 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 as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program 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 V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <stdio.h>
#include <errno.h>
#include <algorithm>
#include "dsp/samplesinkfifo.h"
#include "airspyhfworker.h"
AirspyHFWorker::AirspyHFWorker(airspyhf_device_t* dev, SampleSinkFifo* sampleFifo, QObject* parent) :
QObject(parent),
m_running(false),
m_dev(dev),
m_convertBuffer(AIRSPYHF_BLOCKSIZE),
m_sampleFifo(sampleFifo),
m_samplerate(10),
m_log2Decim(0),
m_iqOrder(true)
{
std::fill(m_buf, m_buf + 2*AIRSPYHF_BLOCKSIZE, 0);
}
AirspyHFWorker::~AirspyHFWorker()
{
stopWork();
}
bool AirspyHFWorker::startWork()
{
qDebug("AirspyHFWorker::startWork");
airspyhf_error rc = (airspyhf_error) airspyhf_start(m_dev, rx_callback, this);
if (rc == AIRSPYHF_SUCCESS)
{
m_running = (airspyhf_is_streaming(m_dev) != 0);
}
else
{
qCritical("AirspyHFWorker::run: failed to start Airspy HF Rx");
m_running = false;
}
return m_running;
}
void AirspyHFWorker::stopWork()
{
qDebug("AirspyHFWorker::stopWork");
airspyhf_error rc = (airspyhf_error) airspyhf_stop(m_dev);
if (rc == AIRSPYHF_SUCCESS) {
qDebug("AirspyHFWorker::run: stopped Airspy HF Rx");
} else {
qDebug("AirspyHFWorker::run: failed to stop Airspy HF Rx");
}
m_running = false;
}
void AirspyHFWorker::setSamplerate(uint32_t samplerate)
{
m_samplerate = samplerate;
}
void AirspyHFWorker::setLog2Decimation(unsigned int log2_decim)
{
m_log2Decim = log2_decim;
}
// Decimate according to specified log2 (ex: log2=4 => decim=16)
void AirspyHFWorker::callbackIQ(const float* buf, qint32 len)
{
SampleVector::iterator it = m_convertBuffer.begin();
switch (m_log2Decim)
{
case 0:
m_decimatorsIQ.decimate1(&it, buf, len);
break;
case 1:
m_decimatorsIQ.decimate2_cen(&it, buf, len);
break;
case 2:
m_decimatorsIQ.decimate4_cen(&it, buf, len);
break;
case 3:
m_decimatorsIQ.decimate8_cen(&it, buf, len);
break;
case 4:
m_decimatorsIQ.decimate16_cen(&it, buf, len);
break;
case 5:
m_decimatorsIQ.decimate32_cen(&it, buf, len);
break;
case 6:
m_decimatorsIQ.decimate64_cen(&it, buf, len);
break;
case 7:
m_decimatorsIQ.decimate128_cen(&it, buf, len);
break;
case 8:
m_decimatorsIQ.decimate256_cen(&it, buf, len);
break;
default:
break;
}
m_sampleFifo->write(m_convertBuffer.begin(), it);
}
void AirspyHFWorker::callbackQI(const float* buf, qint32 len)
{
SampleVector::iterator it = m_convertBuffer.begin();
switch (m_log2Decim)
{
case 0:
m_decimatorsQI.decimate1(&it, buf, len);
break;
case 1:
m_decimatorsQI.decimate2_cen(&it, buf, len);
break;
case 2:
m_decimatorsQI.decimate4_cen(&it, buf, len);
break;
case 3:
m_decimatorsQI.decimate8_cen(&it, buf, len);
break;
case 4:
m_decimatorsQI.decimate16_cen(&it, buf, len);
break;
case 5:
m_decimatorsQI.decimate32_cen(&it, buf, len);
break;
case 6:
m_decimatorsQI.decimate64_cen(&it, buf, len);
break;
case 7:
m_decimatorsQI.decimate128_cen(&it, buf, len);
break;
case 8:
m_decimatorsQI.decimate256_cen(&it, buf, len);
break;
default:
break;
}
m_sampleFifo->write(m_convertBuffer.begin(), it);
}
int AirspyHFWorker::rx_callback(airspyhf_transfer_t* transfer)
{
//qDebug("AirspyHFWorker::rx_callback");
AirspyHFWorker *worker = (AirspyHFWorker*) transfer->ctx;
qint32 nbIAndQ = transfer->sample_count * 2;
if (worker->m_iqOrder) {
worker->callbackIQ((float *) transfer->samples, nbIAndQ);
} else {
worker->callbackQI((float *) transfer->samples, nbIAndQ);
}
return 0;
}