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sdrangel/plugins/samplesource/rtlsdr/rtlsdrinput.cpp

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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel //
// //
// 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 //
// //
// 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 <QDebug>
#include <string.h>
#include <errno.h>
#include "rtlsdrinput.h"
#include "device/devicesourceapi.h"
#include "rtlsdrthread.h"
#include "rtlsdrgui.h"
#include "dsp/dspcommands.h"
#include "dsp/dspengine.h"
#include "dsp/filerecord.h"
MESSAGE_CLASS_DEFINITION(RTLSDRInput::MsgConfigureRTLSDR, Message)
MESSAGE_CLASS_DEFINITION(RTLSDRInput::MsgReportRTLSDR, Message)
MESSAGE_CLASS_DEFINITION(RTLSDRInput::MsgFileRecord, Message)
const quint64 RTLSDRInput::frequencyLowRangeMin = 1000UL;
const quint64 RTLSDRInput::frequencyLowRangeMax = 275000UL;
const quint64 RTLSDRInput::frequencyHighRangeMin = 24000UL;
const quint64 RTLSDRInput::frequencyHighRangeMax = 1900000UL;
const int RTLSDRInput::sampleRateLowRangeMin = 230000U;
const int RTLSDRInput::sampleRateLowRangeMax = 300000U;
const int RTLSDRInput::sampleRateHighRangeMin = 950000U;
const int RTLSDRInput::sampleRateHighRangeMax = 2400000U;
RTLSDRInput::RTLSDRInput(DeviceSourceAPI *deviceAPI) :
m_deviceAPI(deviceAPI),
m_settings(),
m_dev(0),
m_rtlSDRThread(0),
m_deviceDescription(),
m_running(false)
{
openDevice();
char recFileNameCStr[30];
sprintf(recFileNameCStr, "test_%d.sdriq", m_deviceAPI->getDeviceUID());
m_fileSink = new FileRecord(std::string(recFileNameCStr));
m_deviceAPI->addSink(m_fileSink);
}
RTLSDRInput::~RTLSDRInput()
{
if (m_running) stop();
m_deviceAPI->removeSink(m_fileSink);
delete m_fileSink;
closeDevice();
}
void RTLSDRInput::destroy()
{
delete this;
}
bool RTLSDRInput::openDevice()
{
if (m_dev != 0)
{
closeDevice();
}
char vendor[256];
char product[256];
char serial[256];
int res;
int numberOfGains;
if (!m_sampleFifo.setSize(96000 * 4))
{
qCritical("RTLSDRInput::openDevice: Could not allocate SampleFifo");
return false;
}
int device;
if ((device = rtlsdr_get_index_by_serial(qPrintable(m_deviceAPI->getSampleSourceSerial()))) < 0)
{
qCritical("RTLSDRInput::openDevice: could not get RTLSDR serial number");
return false;
}
if ((res = rtlsdr_open(&m_dev, device)) < 0)
{
qCritical("RTLSDRInput::openDevice: could not open RTLSDR #%d: %s", device, strerror(errno));
return false;
}
vendor[0] = '\0';
product[0] = '\0';
serial[0] = '\0';
if ((res = rtlsdr_get_usb_strings(m_dev, vendor, product, serial)) < 0)
{
qCritical("RTLSDRInput::openDevice: error accessing USB device");
stop();
return false;
}
qInfo("RTLSDRInput::openDevice: open: %s %s, SN: %s", vendor, product, serial);
m_deviceDescription = QString("%1 (SN %2)").arg(product).arg(serial);
if ((res = rtlsdr_set_sample_rate(m_dev, 1152000)) < 0)
{
qCritical("RTLSDRInput::openDevice: could not set sample rate: 1024k S/s");
stop();
return false;
}
if ((res = rtlsdr_set_tuner_gain_mode(m_dev, 1)) < 0)
{
qCritical("RTLSDRInput::openDevice: error setting tuner gain mode");
stop();
return false;
}
if ((res = rtlsdr_set_agc_mode(m_dev, 0)) < 0)
{
qCritical("RTLSDRInput::openDevice: error setting agc mode");
stop();
return false;
}
numberOfGains = rtlsdr_get_tuner_gains(m_dev, NULL);
if (numberOfGains < 0)
{
qCritical("RTLSDRInput::openDevice: error getting number of gain values supported");
stop();
return false;
}
m_gains.resize(numberOfGains);
if (rtlsdr_get_tuner_gains(m_dev, &m_gains[0]) < 0)
{
qCritical("RTLSDRInput::openDevice: error getting gain values");
stop();
return false;
}
else
{
qDebug() << "RTLSDRInput::openDevice: " << m_gains.size() << "gains";
}
if ((res = rtlsdr_reset_buffer(m_dev)) < 0)
{
qCritical("RTLSDRInput::openDevice: could not reset USB EP buffers: %s", strerror(errno));
stop();
return false;
}
return true;
}
bool RTLSDRInput::start()
{
QMutexLocker mutexLocker(&m_mutex);
if (!m_dev) {
return false;
}
if (m_running) stop();
if ((m_rtlSDRThread = new RTLSDRThread(m_dev, &m_sampleFifo)) == NULL)
{
qFatal("RTLSDRInput::start: out of memory");
stop();
return false;
}
m_rtlSDRThread->setSamplerate(m_settings.m_devSampleRate);
m_rtlSDRThread->setLog2Decimation(m_settings.m_log2Decim);
m_rtlSDRThread->setFcPos((int) m_settings.m_fcPos);
m_rtlSDRThread->startWork();
mutexLocker.unlock();
applySettings(m_settings, true);
m_running = true;
return true;
}
void RTLSDRInput::closeDevice()
{
if (m_dev != 0)
{
rtlsdr_close(m_dev);
m_dev = 0;
}
m_deviceDescription.clear();
}
void RTLSDRInput::stop()
{
QMutexLocker mutexLocker(&m_mutex);
if (m_rtlSDRThread != 0)
{
m_rtlSDRThread->stopWork();
delete m_rtlSDRThread;
m_rtlSDRThread = 0;
}
m_running = false;
}
const QString& RTLSDRInput::getDeviceDescription() const
{
return m_deviceDescription;
}
int RTLSDRInput::getSampleRate() const
{
int rate = m_settings.m_devSampleRate;
return (rate / (1<<m_settings.m_log2Decim));
}
quint64 RTLSDRInput::getCenterFrequency() const
{
return m_settings.m_centerFrequency;
}
bool RTLSDRInput::handleMessage(const Message& message)
{
if (MsgConfigureRTLSDR::match(message))
{
MsgConfigureRTLSDR& conf = (MsgConfigureRTLSDR&) message;
qDebug() << "RTLSDRInput::handleMessage: MsgConfigureRTLSDR";
bool success = applySettings(conf.getSettings(), conf.getForce());
if (!success)
{
qDebug("RTLSDRInput::handleMessage: config error");
}
return true;
}
else if (MsgFileRecord::match(message))
{
MsgFileRecord& conf = (MsgFileRecord&) message;
qDebug() << "RTLSDRInput::handleMessage: MsgFileRecord: " << conf.getStartStop();
if (conf.getStartStop()) {
m_fileSink->startRecording();
} else {
m_fileSink->stopRecording();
}
return true;
}
else
{
return false;
}
}
bool RTLSDRInput::applySettings(const RTLSDRSettings& settings, bool force)
{
bool forwardChange = false;
if ((m_settings.m_agc != settings.m_agc) || force)
{
if (rtlsdr_set_agc_mode(m_dev, settings.m_agc ? 1 : 0) < 0)
{
qCritical("could not set AGC mode %s", settings.m_agc ? "on" : "off");
}
else
{
m_settings.m_agc = settings.m_agc;
}
}
if ((m_settings.m_gain != settings.m_gain) || force)
{
m_settings.m_gain = settings.m_gain;
if(m_dev != 0)
{
if(rtlsdr_set_tuner_gain(m_dev, m_settings.m_gain) != 0)
{
qDebug("rtlsdr_set_tuner_gain() failed");
}
}
}
if ((m_settings.m_dcBlock != settings.m_dcBlock) || force)
{
m_settings.m_dcBlock = settings.m_dcBlock;
m_deviceAPI->configureCorrections(m_settings.m_dcBlock, m_settings.m_iqImbalance);
}
if ((m_settings.m_iqImbalance != settings.m_iqImbalance) || force)
{
m_settings.m_iqImbalance = settings.m_iqImbalance;
m_deviceAPI->configureCorrections(m_settings.m_dcBlock, m_settings.m_iqImbalance);
}
if ((m_settings.m_loPpmCorrection != settings.m_loPpmCorrection) || force)
{
if (m_dev != 0)
{
if (rtlsdr_set_freq_correction(m_dev, settings.m_loPpmCorrection) < 0)
{
qCritical("RTLSDRInput::applySettings: could not set LO ppm correction: %d", settings.m_loPpmCorrection);
}
else
{
m_settings.m_loPpmCorrection = settings.m_loPpmCorrection;
qDebug("RTLSDRInput::applySettings: LO ppm correction set to: %d", settings.m_loPpmCorrection);
}
}
}
if ((m_settings.m_devSampleRate != settings.m_devSampleRate) || force)
{
m_settings.m_devSampleRate = settings.m_devSampleRate;
forwardChange = true;
if(m_dev != 0)
{
if( rtlsdr_set_sample_rate(m_dev, settings.m_devSampleRate) < 0)
{
qCritical("RTLSDRInput::applySettings: could not set sample rate: %d", settings.m_devSampleRate);
}
else
{
if (m_rtlSDRThread) m_rtlSDRThread->setSamplerate(settings.m_devSampleRate);
qDebug("RTLSDRInput::applySettings: sample rate set to %d", m_settings.m_devSampleRate);
}
}
}
if ((m_settings.m_log2Decim != settings.m_log2Decim) || force)
{
m_settings.m_log2Decim = settings.m_log2Decim;
forwardChange = true;
if (m_rtlSDRThread != 0)
{
m_rtlSDRThread->setLog2Decimation(settings.m_log2Decim);
}
}
if (force || (m_settings.m_centerFrequency != settings.m_centerFrequency)
|| (m_settings.m_fcPos != settings.m_fcPos)
|| (m_settings.m_transverterMode != settings.m_transverterMode)
|| (m_settings.m_transverterDeltaFrequency != settings.m_transverterDeltaFrequency))
{
m_settings.m_centerFrequency = settings.m_centerFrequency;
m_settings.m_transverterMode = settings.m_transverterMode;
m_settings.m_transverterDeltaFrequency = settings.m_transverterDeltaFrequency;
qint64 deviceCenterFrequency = m_settings.m_centerFrequency;
deviceCenterFrequency -= m_settings.m_transverterMode ? m_settings.m_transverterDeltaFrequency : 0;
deviceCenterFrequency = deviceCenterFrequency < 0 ? 0 : deviceCenterFrequency;
qint64 f_img = deviceCenterFrequency;
quint32 devSampleRate = m_settings.m_devSampleRate;
forwardChange = true;
if ((m_settings.m_log2Decim == 0) || (settings.m_fcPos == RTLSDRSettings::FC_POS_CENTER))
{
f_img = deviceCenterFrequency;
}
else
{
if (settings.m_fcPos == RTLSDRSettings::FC_POS_INFRA)
{
deviceCenterFrequency += (devSampleRate / 4);
f_img = deviceCenterFrequency + devSampleRate/2;
}
else if (settings.m_fcPos == RTLSDRSettings::FC_POS_SUPRA)
{
deviceCenterFrequency -= (devSampleRate / 4);
f_img = deviceCenterFrequency - devSampleRate/2;
}
}
if (m_dev != 0)
{
if (rtlsdr_set_center_freq( m_dev, deviceCenterFrequency ) != 0)
{
qDebug("rtlsdr_set_center_freq(%lld) failed", deviceCenterFrequency);
}
else
{
qDebug() << "RTLSDRInput::applySettings: center freq: " << m_settings.m_centerFrequency << " Hz"
<< " device center freq: " << deviceCenterFrequency << " Hz"
<< " device sample rate: " << devSampleRate << "S/s"
<< " Actual sample rate: " << devSampleRate/(1<<m_settings.m_log2Decim) << "S/s"
<< " img: " << f_img << "Hz";
}
}
}
if ((m_settings.m_fcPos != settings.m_fcPos) || force)
{
m_settings.m_fcPos = settings.m_fcPos;
if (m_rtlSDRThread != 0)
{
m_rtlSDRThread->setFcPos((int) m_settings.m_fcPos);
qDebug() << "RTLSDRInput: set fc pos (enum) to " << (int) m_settings.m_fcPos;
}
}
if ((m_settings.m_noModMode != settings.m_noModMode) || force)
{
m_settings.m_noModMode = settings.m_noModMode;
// Direct Modes: 0: off, 1: I, 2: Q, 3: NoMod.
if (m_settings.m_noModMode) {
set_ds_mode(3);
} else {
set_ds_mode(0);
}
}
if (forwardChange)
{
int sampleRate = m_settings.m_devSampleRate/(1<<m_settings.m_log2Decim);
DSPSignalNotification *notif = new DSPSignalNotification(sampleRate, m_settings.m_centerFrequency);
m_fileSink->handleMessage(*notif); // forward to file sink
m_deviceAPI->getDeviceEngineInputMessageQueue()->push(notif);
}
return true;
}
void RTLSDRInput::setMessageQueueToGUI(MessageQueue *queue)
{
qDebug("RTLSDRInput::setMessageQueueToGUI: %p", queue);
DeviceSampleSource::setMessageQueueToGUI(queue);
if (queue) {
MsgReportRTLSDR *message = MsgReportRTLSDR::create(m_gains);
queue->push(message);
}
}
void RTLSDRInput::set_ds_mode(int on)
{
rtlsdr_set_direct_sampling(m_dev, on);
}
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