mirror of
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525 lines
18 KiB
C++
525 lines
18 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
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// written by Christian Daniel //
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// Copyright (C) 2014 John Greb <hexameron@spam.no> //
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// Copyright (C) 2015-2020 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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// //
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// This program 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 as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program 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 V3 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 this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <QDebug>
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#include <errno.h>
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#include "rtlsdrthread.h"
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#include "rtlsdrinput.h"
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#include "dsp/devicesamplesource.h"
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#include "dsp/samplesinkfifo.h"
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#define FCD_BLOCKSIZE 16384
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RTLSDRThread::RTLSDRThread(rtlsdr_dev_t* dev, SampleSinkFifo* sampleFifo, ReplayBuffer<quint8> *replayBuffer, const RTLSDRSettings& settings, QObject* parent) :
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QThread(parent),
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m_running(false),
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m_dev(dev),
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m_convertBuffer(FCD_BLOCKSIZE),
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m_sampleFifo(sampleFifo),
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m_replayBuffer(replayBuffer)
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{
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applySettings(settings, QStringList(), true);
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connect(&m_inputMessageQueue, &MessageQueue::messageEnqueued, this, &RTLSDRThread::handleInputMessages);
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}
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RTLSDRThread::~RTLSDRThread()
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{
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qDebug() << "RTLSDRThread::~RTLSDRThread";
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if (m_running) {
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stopWork();
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}
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}
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void RTLSDRThread::startWork()
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{
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connect(&m_inputMessageQueue, &MessageQueue::messageEnqueued, this, &RTLSDRThread::handleInputMessages);
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m_startWaitMutex.lock();
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start();
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while (!m_running) {
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m_startWaiter.wait(&m_startWaitMutex, 100);
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}
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m_startWaitMutex.unlock();
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}
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void RTLSDRThread::stopWork()
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{
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if (m_running)
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{
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disconnect(&m_inputMessageQueue, &MessageQueue::messageEnqueued, this, &RTLSDRThread::handleInputMessages);
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m_running = false; // Cause run() to finish
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#ifndef __EMSCRIPTEN__
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wait();
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#endif
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}
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}
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void RTLSDRThread::run()
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{
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int res;
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m_running = true;
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m_startWaiter.wakeAll();
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while (m_running)
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{
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#ifndef __EMSCRIPTEN__
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if ((res = rtlsdr_read_async(m_dev, &RTLSDRThread::callbackHelper, this, 32, FCD_BLOCKSIZE)) < 0)
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{
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if (m_running) {
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qCritical("RTLSDRThread: async read error: %s", strerror(errno));
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}
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break;
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}
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#else
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int len = 0;
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unsigned char buf[FCD_BLOCKSIZE];
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if ((res = rtlsdr_read_sync(m_dev, buf, sizeof(buf), &len)) < 0)
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{
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qCritical("RTLSDRThread: read error: %s", strerror(errno));
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break;
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}
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else
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{
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if (m_settings.m_iqOrder) {
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callbackIQ(buf, len);
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} else {
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callbackQI(buf, len);
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}
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}
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#endif
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}
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m_running = false;
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}
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// Decimate according to specified log2 (ex: log2=4 => decim=16)
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// Len is total samples (i.e. one I and Q pair will have len=2)
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void RTLSDRThread::callbackIQ(const quint8* inBuf, qint32 len)
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{
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SampleVector::iterator it = m_convertBuffer.begin();
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// Save data to replay buffer
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m_replayBuffer->lock();
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bool replayEnabled = m_replayBuffer->getSize() > 0;
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if (replayEnabled) {
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m_replayBuffer->write(inBuf, len);
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}
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const quint8* buf = inBuf;
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qint32 remaining = len;
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while (remaining > 0)
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{
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// Choose between live data or replayed data
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if (replayEnabled && m_replayBuffer->useReplay()) {
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len = m_replayBuffer->read(remaining, buf);
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} else {
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len = remaining;
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}
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remaining -= len;
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if (m_settings.m_log2Decim == 0)
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{
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m_decimatorsIQ.decimate1(&it, buf, len);
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}
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else
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{
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if (m_settings.m_fcPos == 0) // Infradyne
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{
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switch (m_settings.m_log2Decim)
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{
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case 1:
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m_decimatorsIQ.decimate2_inf(&it, buf, len);
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break;
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case 2:
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m_decimatorsIQ.decimate4_inf(&it, buf, len);
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break;
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case 3:
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m_decimatorsIQ.decimate8_inf(&it, buf, len);
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break;
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case 4:
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m_decimatorsIQ.decimate16_inf(&it, buf, len);
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break;
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case 5:
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m_decimatorsIQ.decimate32_inf(&it, buf, len);
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break;
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case 6:
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m_decimatorsIQ.decimate64_inf(&it, buf, len);
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break;
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default:
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break;
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}
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}
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else if (m_settings.m_fcPos == 1) // Supradyne
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{
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switch (m_settings.m_log2Decim)
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{
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case 1:
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m_decimatorsIQ.decimate2_sup(&it, buf, len);
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break;
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case 2:
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m_decimatorsIQ.decimate4_sup(&it, buf, len);
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break;
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case 3:
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m_decimatorsIQ.decimate8_sup(&it, buf, len);
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break;
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case 4:
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m_decimatorsIQ.decimate16_sup(&it, buf, len);
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break;
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case 5:
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m_decimatorsIQ.decimate32_sup(&it, buf, len);
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break;
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case 6:
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m_decimatorsIQ.decimate64_sup(&it, buf, len);
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break;
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default:
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break;
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}
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}
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else // Centered
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{
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switch (m_settings.m_log2Decim)
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{
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case 1:
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m_decimatorsIQ.decimate2_cen(&it, buf, len);
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break;
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case 2:
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m_decimatorsIQ.decimate4_cen(&it, buf, len);
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break;
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case 3:
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m_decimatorsIQ.decimate8_cen(&it, buf, len);
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break;
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case 4:
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m_decimatorsIQ.decimate16_cen(&it, buf, len);
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break;
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case 5:
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m_decimatorsIQ.decimate32_cen(&it, buf, len);
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break;
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case 6:
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m_decimatorsIQ.decimate64_cen(&it, buf, len);
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break;
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default:
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break;
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}
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}
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}
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}
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m_replayBuffer->unlock();
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m_sampleFifo->write(m_convertBuffer.begin(), it);
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#ifndef __EMSCRIPTEN__
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if (!m_running)
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rtlsdr_cancel_async(m_dev);
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#endif
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}
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void RTLSDRThread::callbackQI(const quint8* inBuf, qint32 len)
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{
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SampleVector::iterator it = m_convertBuffer.begin();
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// Save data to replay buffer
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m_replayBuffer->lock();
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bool replayEnabled = m_replayBuffer->getSize() > 0;
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if (replayEnabled) {
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m_replayBuffer->write(inBuf, len);
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}
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const quint8* buf = inBuf;
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qint32 remaining = len;
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while (remaining > 0)
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{
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// Choose between live data or replayed data
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if (replayEnabled && m_replayBuffer->useReplay()) {
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len = m_replayBuffer->read(remaining, buf);
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} else {
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len = remaining;
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}
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remaining -= len;
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if (m_settings.m_log2Decim == 0)
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{
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m_decimatorsQI.decimate1(&it, buf, len);
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}
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else
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{
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if (m_settings.m_fcPos == 0) // Infradyne
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{
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switch (m_settings.m_log2Decim)
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{
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case 1:
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m_decimatorsQI.decimate2_inf(&it, buf, len);
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break;
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case 2:
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m_decimatorsQI.decimate4_inf(&it, buf, len);
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break;
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case 3:
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m_decimatorsQI.decimate8_inf(&it, buf, len);
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break;
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case 4:
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m_decimatorsQI.decimate16_inf(&it, buf, len);
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break;
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case 5:
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m_decimatorsQI.decimate32_inf(&it, buf, len);
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break;
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case 6:
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m_decimatorsQI.decimate64_inf(&it, buf, len);
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break;
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default:
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break;
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}
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}
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else if (m_settings.m_fcPos == 1) // Supradyne
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{
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switch (m_settings.m_log2Decim)
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{
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case 1:
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m_decimatorsQI.decimate2_sup(&it, buf, len);
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break;
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case 2:
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m_decimatorsQI.decimate4_sup(&it, buf, len);
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break;
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case 3:
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m_decimatorsQI.decimate8_sup(&it, buf, len);
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break;
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case 4:
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m_decimatorsQI.decimate16_sup(&it, buf, len);
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break;
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case 5:
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m_decimatorsQI.decimate32_sup(&it, buf, len);
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break;
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case 6:
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m_decimatorsQI.decimate64_sup(&it, buf, len);
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break;
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default:
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break;
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}
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}
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else // Centered
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{
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switch (m_settings.m_log2Decim)
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{
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case 1:
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m_decimatorsQI.decimate2_cen(&it, buf, len);
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break;
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case 2:
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m_decimatorsQI.decimate4_cen(&it, buf, len);
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break;
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case 3:
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m_decimatorsQI.decimate8_cen(&it, buf, len);
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break;
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case 4:
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m_decimatorsQI.decimate16_cen(&it, buf, len);
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break;
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case 5:
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m_decimatorsQI.decimate32_cen(&it, buf, len);
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break;
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case 6:
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m_decimatorsQI.decimate64_cen(&it, buf, len);
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break;
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default:
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break;
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}
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}
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}
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}
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m_replayBuffer->unlock();
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m_sampleFifo->write(m_convertBuffer.begin(), it);
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#ifndef __EMSCRIPTEN__
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if (!m_running)
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rtlsdr_cancel_async(m_dev);
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#endif
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}
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#ifndef __EMSCRIPTEN__
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void RTLSDRThread::callbackHelper(unsigned char* buf, uint32_t len, void* ctx)
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{
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RTLSDRThread* thread = (RTLSDRThread*) ctx;
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if (thread->m_settings.m_iqOrder) {
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thread->callbackIQ(buf, len);
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} else {
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thread->callbackQI(buf, len);
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}
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}
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#endif
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void RTLSDRThread::handleInputMessages()
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{
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Message* message;
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while ((message = m_inputMessageQueue.pop()) != nullptr)
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{
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if (handleMessage(*message)) {
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delete message;
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}
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}
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}
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bool RTLSDRThread::handleMessage(const Message& cmd)
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{
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if (RTLSDRInput::MsgConfigureRTLSDR::match(cmd))
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{
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auto& conf = (const RTLSDRInput::MsgConfigureRTLSDR&) cmd;
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applySettings(conf.getSettings(), conf.getSettingsKeys(), conf.getForce());
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return true;
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}
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else
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{
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return false;
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}
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}
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bool RTLSDRThread::applySettings(const RTLSDRSettings& settings, const QStringList& settingsKeys, bool force)
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{
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qDebug() << "RTLSDRThread::applySettings: force: " << force << settings.getDebugString(settingsKeys, force);
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if ((settingsKeys.contains("agc") && (settings.m_agc != m_settings.m_agc)) || force)
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{
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if (rtlsdr_set_agc_mode(m_dev, settings.m_agc ? 1 : 0) < 0) {
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qCritical("RTLSDRThread::applySettings: could not set AGC mode %s", settings.m_agc ? "on" : "off");
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} else {
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qDebug("RTLSDRThread::applySettings: AGC mode %s", settings.m_agc ? "on" : "off");
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}
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}
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if ((settingsKeys.contains("loPpmCorrection") && (settings.m_loPpmCorrection != m_settings.m_loPpmCorrection)) || force)
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{
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if (rtlsdr_set_freq_correction(m_dev, settings.m_loPpmCorrection) < 0) {
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qCritical("RTLSDRThread::applySettings: could not set LO ppm correction: %d", settings.m_loPpmCorrection);
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} else {
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qDebug("RTLSDRThread::applySettings: LO ppm correction set to: %d", settings.m_loPpmCorrection);
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}
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}
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if ((settingsKeys.contains("devSampleRate") && ((settings.m_devSampleRate) != m_settings.m_devSampleRate)) || force)
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{
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if (rtlsdr_set_sample_rate(m_dev, settings.m_devSampleRate) < 0) {
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qCritical("RTLSDRThread::applySettings: could not set sample rate: %d", settings.m_devSampleRate);
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} else {
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qDebug("RTLSDRThread::applySettings: sample rate set to %d", settings.m_devSampleRate);
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}
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}
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if ((settingsKeys.contains("log2Decim") && (settings.m_log2Decim != m_settings.m_log2Decim)) || force)
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{
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qDebug("RTLSDRThread::applySettings: log2decim set to %d", settings.m_log2Decim);
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}
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if ( (settingsKeys.contains("centerFrequency") && (settings.m_centerFrequency != m_settings.m_centerFrequency))
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|| (settingsKeys.contains("fcPos") && (settings.m_fcPos != m_settings.m_fcPos))
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|| (settingsKeys.contains("log2Decim") && (settings.m_log2Decim != m_settings.m_log2Decim))
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|| (settingsKeys.contains("devSampleRate") && (settings.m_devSampleRate != m_settings.m_devSampleRate))
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|| (settingsKeys.contains("transverterMode") && (settings.m_transverterMode != m_settings.m_transverterMode))
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|| (settingsKeys.contains("transverterDeltaFrequency") && (settings.m_transverterDeltaFrequency != m_settings.m_transverterDeltaFrequency))
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|| force)
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{
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qint64 deviceCenterFrequency = DeviceSampleSource::calculateDeviceCenterFrequency(
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settings.m_centerFrequency,
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settings.m_transverterDeltaFrequency,
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settings.m_log2Decim,
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(DeviceSampleSource::fcPos_t) settings.m_fcPos,
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settings.m_devSampleRate,
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DeviceSampleSource::FrequencyShiftScheme::FSHIFT_STD,
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settings.m_transverterMode);
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if (rtlsdr_set_center_freq(m_dev, deviceCenterFrequency) != 0) {
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qWarning("RTLSDRThread::applySettings: rtlsdr_set_center_freq(%lld) failed", deviceCenterFrequency);
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} else {
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qDebug("RTLSDRThread::applySettings: rtlsdr_set_center_freq(%lld)", deviceCenterFrequency);
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}
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}
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if ((settingsKeys.contains("noModMode") && (settings.m_noModMode != m_settings.m_noModMode)) || force)
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{
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qDebug() << "RTLSDRThread::applySettings: set noModMode to " << settings.m_noModMode;
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// Direct Modes: 0: off, 1: I, 2: Q, 3: NoMod.
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if (settings.m_noModMode) {
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rtlsdr_set_direct_sampling(m_dev, 3);
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} else {
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rtlsdr_set_direct_sampling(m_dev, 0);
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}
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}
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if ((settingsKeys.contains("rfBandwidth") && (settings.m_rfBandwidth != m_settings.m_rfBandwidth)) || force)
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{
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if (rtlsdr_set_tuner_bandwidth( m_dev, settings.m_rfBandwidth) != 0) {
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qCritical("RTLSDRThread::applySettings: could not set RF bandwidth to %u", settings.m_rfBandwidth);
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} else {
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qDebug() << "RTLSDRThread::applySettings: set RF bandwidth to " << settings.m_rfBandwidth;
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}
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}
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// Reapply offset_tuning setting if bandwidth is changed, otherwise frequency response of filter looks wrong on E4000
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if ( (settingsKeys.contains("offsetTuning") && (settings.m_offsetTuning != m_settings.m_offsetTuning))
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|| (settingsKeys.contains("rfBandwidth") && (settings.m_rfBandwidth != m_settings.m_rfBandwidth))
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|| force)
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{
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if (rtlsdr_set_offset_tuning(m_dev, settings.m_offsetTuning ? 0 : 1) != 0) {
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qCritical("RTLSDRThread::applySettings: could not set offset tuning to %s", settings.m_offsetTuning ? "on" : "off");
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} else {
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qDebug("RTLSDRThread::applySettings: offset tuning set to %s", settings.m_offsetTuning ? "on" : "off");
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}
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}
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if ((settingsKeys.contains("gain") && (settings.m_gain != m_settings.m_gain)) || force)
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{
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// Nooelec E4000 SDRs appear to require tuner_gain_mode to be reset to manual before
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// each call to set_tuner_gain, otherwise tuner AGC seems to be reenabled
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if (rtlsdr_set_tuner_gain_mode(m_dev, 1) < 0) {
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qCritical("RTLSDRThread::applySettings: error setting tuner gain mode to manual");
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}
|
|
if (rtlsdr_set_tuner_gain(m_dev, settings.m_gain) != 0) {
|
|
qCritical("RTLSDRThread::applySettings: rtlsdr_set_tuner_gain() failed");
|
|
} else {
|
|
qDebug("RTLSDRThread::applySettings: rtlsdr_set_tuner_gain() to %d", settings.m_gain);
|
|
}
|
|
}
|
|
|
|
if ((settingsKeys.contains("biasTee") && (settings.m_biasTee != m_settings.m_biasTee)) || force)
|
|
{
|
|
if (rtlsdr_set_bias_tee(m_dev, settings.m_biasTee ? 1 : 0) != 0) {
|
|
qCritical("RTLSDRThread::applySettings: rtlsdr_set_bias_tee() failed");
|
|
} else {
|
|
qDebug("RTLSDRThread::applySettings: rtlsdr_set_bias_tee() to %d", settings.m_biasTee ? 1 : 0);
|
|
}
|
|
}
|
|
|
|
if (force) {
|
|
m_settings = settings;
|
|
} else {
|
|
m_settings.applySettings(settingsKeys, settings);
|
|
}
|
|
|
|
return true;
|
|
}
|