/////////////////////////////////////////////////////////////////////////////////// // Copyright (C) 2015-2020 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 . // /////////////////////////////////////////////////////////////////////////////////// #include #include #include #include "airspyworker.h" #include "dsp/samplesinkfifo.h" AirspyWorker::AirspyWorker(struct airspy_device* dev, SampleSinkFifo* sampleFifo, QObject* parent) : QObject(parent), m_running(false), m_dev(dev), m_convertBuffer(AIRSPY_BLOCKSIZE), m_sampleFifo(sampleFifo), m_samplerate(10), m_log2Decim(0), m_fcPos(0), m_iqOrder(true) { std::fill(m_buf, m_buf + 2*AIRSPY_BLOCKSIZE, 0); } AirspyWorker::~AirspyWorker() { stopWork(); } bool AirspyWorker::startWork() { airspy_error rc; rc = (airspy_error) airspy_start_rx(m_dev, rx_callback, this); if (rc == AIRSPY_SUCCESS) { m_running = (airspy_is_streaming(m_dev) == AIRSPY_TRUE); } else { qCritical("AirspyWorker::run: failed to start Airspy Rx: %s", airspy_error_name(rc)); m_running = false; } return m_running; } void AirspyWorker::stopWork() { airspy_error rc = (airspy_error) airspy_stop_rx(m_dev); if (rc == AIRSPY_SUCCESS) { qDebug("AirspyWorker::run: stopped Airspy Rx"); } else { qDebug("AirspyWorker::run: failed to stop Airspy Rx: %s", airspy_error_name(rc)); } m_running = false; } void AirspyWorker::setSamplerate(uint32_t samplerate) { m_samplerate = samplerate; } void AirspyWorker::setLog2Decimation(unsigned int log2_decim) { m_log2Decim = log2_decim; } void AirspyWorker::setFcPos(int fcPos) { m_fcPos = fcPos; } // Decimate according to specified log2 (ex: log2=4 => decim=16) void AirspyWorker::callbackIQ(const qint16* buf, qint32 len) { SampleVector::iterator it = m_convertBuffer.begin(); if (m_log2Decim == 0) { m_decimatorsIQ.decimate1(&it, buf, len); } else { if (m_fcPos == 0) // Infra { switch (m_log2Decim) { case 1: m_decimatorsIQ.decimate2_inf(&it, buf, len); break; case 2: m_decimatorsIQ.decimate4_inf(&it, buf, len); break; case 3: m_decimatorsIQ.decimate8_inf(&it, buf, len); break; case 4: m_decimatorsIQ.decimate16_inf(&it, buf, len); break; case 5: m_decimatorsIQ.decimate32_inf(&it, buf, len); break; case 6: m_decimatorsIQ.decimate64_inf(&it, buf, len); break; default: break; } } else if (m_fcPos == 1) // Supra { switch (m_log2Decim) { case 1: m_decimatorsIQ.decimate2_sup(&it, buf, len); break; case 2: m_decimatorsIQ.decimate4_sup(&it, buf, len); break; case 3: m_decimatorsIQ.decimate8_sup(&it, buf, len); break; case 4: m_decimatorsIQ.decimate16_sup(&it, buf, len); break; case 5: m_decimatorsIQ.decimate32_sup(&it, buf, len); break; case 6: m_decimatorsIQ.decimate64_sup(&it, buf, len); break; default: break; } } else if (m_fcPos == 2) // Center { switch (m_log2Decim) { 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; default: break; } } } m_sampleFifo->write(m_convertBuffer.begin(), it); } void AirspyWorker::callbackQI(const qint16* buf, qint32 len) { SampleVector::iterator it = m_convertBuffer.begin(); if (m_log2Decim == 0) { m_decimatorsQI.decimate1(&it, buf, len); } else { if (m_fcPos == 0) // Infra { switch (m_log2Decim) { case 1: m_decimatorsQI.decimate2_inf(&it, buf, len); break; case 2: m_decimatorsQI.decimate4_inf(&it, buf, len); break; case 3: m_decimatorsQI.decimate8_inf(&it, buf, len); break; case 4: m_decimatorsQI.decimate16_inf(&it, buf, len); break; case 5: m_decimatorsQI.decimate32_inf(&it, buf, len); break; case 6: m_decimatorsQI.decimate64_inf(&it, buf, len); break; default: break; } } else if (m_fcPos == 1) // Supra { switch (m_log2Decim) { case 1: m_decimatorsQI.decimate2_sup(&it, buf, len); break; case 2: m_decimatorsQI.decimate4_sup(&it, buf, len); break; case 3: m_decimatorsQI.decimate8_sup(&it, buf, len); break; case 4: m_decimatorsQI.decimate16_sup(&it, buf, len); break; case 5: m_decimatorsQI.decimate32_sup(&it, buf, len); break; case 6: m_decimatorsQI.decimate64_sup(&it, buf, len); break; default: break; } } else if (m_fcPos == 2) // Center { switch (m_log2Decim) { 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; default: break; } } } m_sampleFifo->write(m_convertBuffer.begin(), it); } int AirspyWorker::rx_callback(airspy_transfer_t* transfer) { AirspyWorker *worker = (AirspyWorker*) transfer->ctx; qint32 bytes_to_write = transfer->sample_count * sizeof(qint16); if (worker->m_iqOrder) { worker->callbackIQ((qint16 *) transfer->samples, bytes_to_write); } else { worker->callbackQI((qint16 *) transfer->samples, bytes_to_write); } return 0; }