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Code Issues Projects Releases Wiki Activity

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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plugins/samplesource/rtlsdr/rtlsdrinput.cpp
+33 -23
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@@ -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);
}
}