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Samplerate options.

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This commit is contained in:
John Greb 2014-11-08 23:42:43 +00:00
parent 9c3b58d7a3
commit 812d0f4d15
7 changed files with 79 additions and 76 deletions
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25
plugins/samplesource/rtlsdr/rtlsdrgui.cpp
View File

@ -10,7 +10,7 @@ RTLSDRGui::RTLSDRGui(PluginAPI* pluginAPI, QWidget* parent) :
m_sampleSource(NULL)
{
ui->setupUi(this);
ui->centerFrequency->setValueRange(7, 20000U, 2200000U);
ui->centerFrequency->setValueRange(7, 28900U, 1700000U);
connect(&m_updateTimer, SIGNAL(timeout()), this, SLOT(updateHardware()));
displaySettings();
@ -95,7 +95,7 @@ bool RTLSDRGui::handleMessage(Message* message)
void RTLSDRGui::displaySettings()
{
ui->centerFrequency->setValue(m_generalSettings.m_centerFrequency / 1000);
ui->decimation->setValue(m_settings.m_decimation);
ui->samplerate->setValue(m_settings.m_samplerate);
if(m_gains.size() > 0) {
int dist = abs(m_settings.m_gain - m_gains[0]);
@ -139,10 +139,12 @@ void RTLSDRGui::on_gain_valueChanged(int value)
sendSettings();
}
void RTLSDRGui::on_decimation_valueChanged(int value)
void RTLSDRGui::on_samplerate_valueChanged(int value)
{
ui->decimationText->setText(tr("1:%1").arg(1 << value));
m_settings.m_decimation = value;
int Rates[] = {288, 1024, 1536, 0};
int newrate = Rates[value];
ui->samplerateText->setText(tr("%1k").arg(newrate));
m_settings.m_samplerate = newrate * 1000;
sendSettings();
}
@ -159,19 +161,16 @@ void RTLSDRGui::on_checkBox_stateChanged(int state) {
ui->radioButton->setEnabled(true);
ui->radioButton_2->setEnabled(true);
ui->gain->setEnabled(false);
//ui->decimation->setMaximum(6);
ui->centerFrequency->setValueRange(5, 0U, 30000U);
ui->centerFrequency->setValue(0);
ui->centerFrequency->setValueRange(7, 1000U, 28700U);
ui->centerFrequency->setValue(27000);
}
else {
((RTLSDRInput*)m_sampleSource)->set_ds_mode(0);
ui->radioButton->setEnabled(false);
ui->radioButton_2->setEnabled(false);
ui->gain->setEnabled(true);
//ui->decimation->setMaximum(4);
ui->centerFrequency->setValueRange(7, 20000U, 2200000U);
ui->centerFrequency->setValueRange(7, 28900U, 1700000U);
ui->centerFrequency->setValue(29000);
}
}
@ -182,4 +181,4 @@ void RTLSDRGui::on_radioButton_toggled(bool checked){
void RTLSDRGui::on_radioButton_2_toggled(bool checked){
if (checked)
((RTLSDRInput*)m_sampleSource)->set_ds_mode(2);
}
}

2
plugins/samplesource/rtlsdr/rtlsdrgui.h
View File

@ -45,7 +45,7 @@ private:
private slots:
void on_centerFrequency_changed(quint64 value);
void on_gain_valueChanged(int value);
void on_decimation_valueChanged(int value);
void on_samplerate_valueChanged(int value);
void on_checkBox_stateChanged(int state);
void on_radioButton_toggled(bool checked);
void on_radioButton_2_toggled(bool checked);

18
plugins/samplesource/rtlsdr/rtlsdrgui.ui
View File

@ -106,12 +106,12 @@
<number>3</number>
</property>
<item row="0" column="1">
<widget class="QSlider" name="decimation">
<widget class="QSlider" name="samplerate">
<property name="toolTip">
<string>Signal decimation factor</string>
<string>Device Samplerate</string>
</property>
<property name="maximum">
<number>4</number>
<number>2</number>
</property>
<property name="pageStep">
<number>1</number>
@ -130,12 +130,12 @@
</sizepolicy>
</property>
<property name="text">
<string>Zoom Out</string>
<string>Rate</string>
</property>
</widget>
</item>
<item row="0" column="2">
<widget class="QLabel" name="decimationText">
<widget class="QLabel" name="samplerateText">
<property name="minimumSize">
<size>
<width>40</width>
@ -143,7 +143,7 @@
</size>
</property>
<property name="text">
<string>1:1</string>
<string>288k</string>
</property>
<property name="alignment">
<set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
@ -226,7 +226,7 @@
<item>
<widget class="QCheckBox" name="checkBox">
<property name="text">
<string>ds</string>
<string>Direct Sampling: </string>
</property>
</widget>
</item>
@ -236,7 +236,7 @@
<bool>false</bool>
</property>
<property name="text">
<string>i</string>
<string>I</string>
</property>
<property name="checkable">
<bool>true</bool>
@ -252,7 +252,7 @@
<bool>false</bool>
</property>
<property name="text">
<string>q</string>
<string>Q</string>
</property>
</widget>
</item>

56
plugins/samplesource/rtlsdr/rtlsdrinput.cpp
View File

@ -27,21 +27,21 @@ MESSAGE_CLASS_DEFINITION(RTLSDRInput::MsgReportRTLSDR, Message)
RTLSDRInput::Settings::Settings() :
m_gain(0),
m_decimation(0)
m_samplerate(288000)
{
}
void RTLSDRInput::Settings::resetToDefaults()
{
m_gain = 0;
m_decimation = 0;
m_samplerate = 288000;
}
QByteArray RTLSDRInput::Settings::serialize() const
{
SimpleSerializer s(1);
s.writeS32(1, m_gain);
s.writeS32(2, m_decimation);
s.writeS32(2, m_samplerate);
return s.final();
}
@ -56,7 +56,7 @@ bool RTLSDRInput::Settings::deserialize(const QByteArray& data)
if(d.getVersion() == 1) {
d.readS32(1, &m_gain, 0);
d.readS32(2, &m_decimation, 0);
d.readS32(2, &m_samplerate, 0);
return true;
} else {
resetToDefaults();
@ -91,7 +91,7 @@ bool RTLSDRInput::startInput(int device)
int res;
int numberOfGains;
if(!m_sampleFifo.setSize(524288)) {
if(!m_sampleFifo.setSize(96000 * 4)) {
qCritical("Could not allocate SampleFifo");
return false;
}
@ -111,8 +111,8 @@ bool RTLSDRInput::startInput(int device)
qWarning("RTLSDRInput 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, 1536000)) < 0) {
qCritical("could not set sample rate: %s", strerror(errno));
if((res = rtlsdr_set_sample_rate(m_dev, 288000)) < 0) {
qCritical("could not set sample rate: 288k S/s");
goto failed;
}
@ -182,7 +182,10 @@ const QString& RTLSDRInput::getDeviceDescription() const
int RTLSDRInput::getSampleRate() const
{
return 96000 * (1 << m_settings.m_decimation);
int rate = m_settings.m_samplerate / 4;
if (rate < 200000)
return rate;
return (rate / 4);
}
quint64 RTLSDRInput::getCenterFrequency() const
@ -207,14 +210,6 @@ bool RTLSDRInput::applySettings(const GeneralSettings& generalSettings, const Se
{
QMutexLocker mutexLocker(&m_mutex);
if((m_generalSettings.m_centerFrequency != generalSettings.m_centerFrequency) || force) {
m_generalSettings.m_centerFrequency = generalSettings.m_centerFrequency;
if(m_dev != NULL) {
if(rtlsdr_set_center_freq(m_dev, m_generalSettings.m_centerFrequency
+ 384000) != 0)
qDebug("osmosdr_set_center_freq(%lld) failed", m_generalSettings.m_centerFrequency);
}
}
if((m_settings.m_gain != settings.m_gain) || force) {
m_settings.m_gain = settings.m_gain;
if(m_dev != NULL) {
@ -222,15 +217,30 @@ bool RTLSDRInput::applySettings(const GeneralSettings& generalSettings, const Se
qDebug("rtlsdr_set_tuner_gain() failed");
}
}
if((m_settings.m_decimation != settings.m_decimation) || force) {
m_settings.m_decimation = settings.m_decimation;
if(m_dev != NULL)
m_rtlSDRThread->setDecimation(m_settings.m_decimation);
if((m_settings.m_samplerate != settings.m_samplerate) || force) {
if(m_dev != NULL) {
if( rtlsdr_set_sample_rate(m_dev, settings.m_samplerate) < 0)
qCritical("could not set sample rate: %d", settings.m_samplerate);
else {
m_settings.m_samplerate = settings.m_samplerate;
m_rtlSDRThread->setSamplerate(settings.m_samplerate);
}
}
}
m_generalSettings.m_centerFrequency = generalSettings.m_centerFrequency;
if(m_dev != NULL) {
if(rtlsdr_set_center_freq( m_dev, m_generalSettings.m_centerFrequency
+ (m_settings.m_samplerate / 4) ) != 0)
qDebug("osmosdr_set_center_freq(%lld) failed", m_generalSettings.m_centerFrequency);
}
return true;
}
void RTLSDRInput::set_ds_mode(int on){
void RTLSDRInput::set_ds_mode(int on)
{
rtlsdr_set_direct_sampling(m_dev, on);
}
}

2
plugins/samplesource/rtlsdr/rtlsdrinput.h
View File

@ -28,7 +28,7 @@ class RTLSDRInput : public SampleSource {
public:
struct Settings {
qint32 m_gain;
qint32 m_decimation;
qint32 m_samplerate;
Settings();
void resetToDefaults();

47
plugins/samplesource/rtlsdr/rtlsdrthread.cpp
View File

@ -28,9 +28,8 @@ RTLSDRThread::RTLSDRThread(rtlsdr_dev_t* dev, SampleFifo* sampleFifo, QObject* p
m_dev(dev),
m_convertBuffer(BLOCKSIZE),
m_sampleFifo(sampleFifo),
m_decimation(2)
m_samplerate(288000)
{
m_localdecimation = 0;
}
RTLSDRThread::~RTLSDRThread()
@ -53,9 +52,9 @@ void RTLSDRThread::stopWork()
wait();
}
void RTLSDRThread::setDecimation(int decimation)
void RTLSDRThread::setSamplerate(int samplerate)
{
m_decimation = decimation;
m_samplerate = samplerate;
}
void RTLSDRThread::run()
@ -136,43 +135,39 @@ void RTLSDRThread::decimate16(SampleVector::iterator* it, const quint8* buf, qin
}
}
/*
Decimate everything by 16x, except 288kHz
TODO : no offset tuning for direct sampling
*/
void RTLSDRThread::callback(const quint8* buf, qint32 len)
{
qint16 xreal, yimag, phase;
SampleVector::iterator it = m_convertBuffer.begin();
int decimationFactor[] = {1, 1, 1, 2, 4, 0};
if (++m_localdecimation < decimationFactor[m_decimation]) return;
m_localdecimation = 0;
int mode = 0;
if (m_samplerate < 800000)
mode = 2;
// if (directsampling) mode++;
switch(4 - m_decimation) {
case 0: // 1:1 = no decimation
// just rotation
phase = -(1<<2);
for (int pos = 0; pos < len + 3; pos += 4) {
phase *= -1;
xreal = phase * (2 * buf[pos+0] - 255);
yimag = phase * (2 * buf[pos+1] - 255);
*it++ = Sample(xreal, yimag);
xreal = phase * (255 - 2 * buf[pos+3]);
yimag = phase * (2 * buf[pos+2] - 255);
*it++ = Sample(xreal, yimag);
}
switch(mode) {
case 0:
decimate16(&it, buf, len);
break;
case 1: // 1:2
decimate2(&it, buf, len);
case 1:
// no_rotate16(&it, buf, len);
break;
case 2: // 1:4
case 2:
decimate4(&it, buf, len);
break;
case 3: // 1:8
decimate8(&it, buf, len);
case 3:
// norotate4(&it, buf, len);
break;
default:
case 4: // 1:16
decimate16(&it, buf, len);
break;
}

5
plugins/samplesource/rtlsdr/rtlsdrthread.h
View File

@ -35,7 +35,7 @@ public:
void startWork();
void stopWork();
void setDecimation(int decimation);
void setSamplerate(int sanplerate);
private:
QMutex m_startWaitMutex;
@ -46,8 +46,7 @@ private:
SampleVector m_convertBuffer;
SampleFifo* m_sampleFifo;
int m_decimation;
int m_localdecimation;
int m_samplerate;
void run();