LimeSDR output: implemented baseband or device sample rate input option

plugins/samplesink/limesdroutput/limesdroutputgui.cpp

@@ -33,6 +33,7 @@ LimeSDROutputGUI::LimeSDROutputGUI(DeviceUISet *deviceUISet, QWidget* parent) :
     ui(new Ui::LimeSDROutputGUI),
     m_deviceUISet(deviceUISet),
     m_settings(),
+    m_sampleRateMode(true),
     m_sampleRate(0),
     m_lastEngineState(DSPDeviceSinkEngine::StNotStarted),
     m_doApplySettings(true),
@@ -302,7 +303,7 @@ void LimeSDROutputGUI::updateSampleRateAndFrequency()
 {
     m_deviceUISet->getSpectrum()->setSampleRate(m_sampleRate);
     m_deviceUISet->getSpectrum()->setCenterFrequency(m_deviceCenterFrequency);
-    ui->deviceRateLabel->setText(tr("%1k").arg(QString::number(m_sampleRate / 1000.0f, 'g', 5)));
+    displaySampleRate();
 }
 
 void LimeSDROutputGUI::updateDACRate()
@@ -316,6 +317,38 @@ void LimeSDROutputGUI::updateDACRate()
     }
 }
 
+void LimeSDROutputGUI::displaySampleRate()
+{
+    float minF, maxF;
+    m_limeSDROutput->getSRRange(minF, maxF);
+
+    ui->sampleRate->blockSignals(true);
+
+    if (m_sampleRateMode)
+    {
+        ui->sampleRateMode->setStyleSheet("QToolButton { background:rgb(60,60,60); }");
+        ui->sampleRateMode->setText("SR");
+        ui->sampleRate->setValueRange(8, (uint32_t) minF, (uint32_t) maxF);
+        ui->sampleRate->setValue(m_settings.m_devSampleRate);
+        ui->sampleRate->setToolTip("Device to host sample rate (S/s)");
+        ui->deviceRateText->setToolTip("Baseband sample rate (S/s)");
+        uint32_t basebandSampleRate = m_settings.m_devSampleRate/(1<<m_settings.m_log2SoftInterp);
+        ui->deviceRateText->setText(tr("%1k").arg(QString::number(basebandSampleRate / 1000.0f, 'g', 5)));
+    }
+    else
+    {
+        ui->sampleRateMode->setStyleSheet("QToolButton { background:rgb(50,50,50); }");
+        ui->sampleRateMode->setText("BB");
+        ui->sampleRate->setValueRange(8, (uint32_t) minF/(1<<m_settings.m_log2SoftInterp), (uint32_t) maxF/(1<<m_settings.m_log2SoftInterp));
+        ui->sampleRate->setValue(m_settings.m_devSampleRate/(1<<m_settings.m_log2SoftInterp));
+        ui->sampleRate->setToolTip("Baseband sample rate (S/s)");
+        ui->deviceRateText->setToolTip("Device to host sample rate (S/s)");
+        ui->deviceRateText->setText(tr("%1k").arg(QString::number(m_settings.m_devSampleRate / 1000.0f, 'g', 5)));
+    }
+
+    ui->sampleRate->blockSignals(false);
+}
+
 void LimeSDROutputGUI::displaySettings()
 {
     ui->transverter->setDeltaFrequency(m_settings.m_transverterDeltaFrequency);
@@ -325,7 +358,7 @@ void LimeSDROutputGUI::displaySettings()
     ui->extClock->setExternalClockActive(m_settings.m_extClock);
 
     setCenterFrequencyDisplay();
-    ui->sampleRate->setValue(m_settings.m_devSampleRate);
+    displaySampleRate();
 
     ui->hwInterp->setCurrentIndex(m_settings.m_log2HardInterp);
     ui->swInterp->setCurrentIndex(m_settings.m_log2SoftInterp);
@@ -497,7 +530,12 @@ void LimeSDROutputGUI::on_ncoEnable_toggled(bool checked)
 
 void LimeSDROutputGUI::on_sampleRate_changed(quint64 value)
 {
-    m_settings.m_devSampleRate = value;
+    if (m_sampleRateMode) {
+        m_settings.m_devSampleRate = value;
+    } else {
+        m_settings.m_devSampleRate = value * (1 << m_settings.m_log2SoftInterp);
+    }
+
     updateDACRate();
     setNCODisplay();
     sendSettings();}
@@ -514,9 +552,19 @@ void LimeSDROutputGUI::on_hwInterp_currentIndexChanged(int index)
 
 void LimeSDROutputGUI::on_swInterp_currentIndexChanged(int index)
 {
-    if ((index <0) || (index > 6))
+    if ((index <0) || (index > 6)) {
         return;
+    }
+
     m_settings.m_log2SoftInterp = index;
+    displaySampleRate();
+
+    if (m_sampleRateMode) {
+        m_settings.m_devSampleRate = ui->sampleRate->getValueNew();
+    } else {
+        m_settings.m_devSampleRate = ui->sampleRate->getValueNew() * (1 << m_settings.m_log2SoftInterp);
+    }
+
     sendSettings();
 }
 
@@ -569,6 +617,12 @@ void LimeSDROutputGUI::on_transverter_clicked()
     sendSettings();
 }
 
+void LimeSDROutputGUI::on_sampleRateMode_toggled(bool checked)
+{
+    m_sampleRateMode = checked;
+    displaySampleRate();
+}
+
 void LimeSDROutputGUI::openDeviceSettingsDialog(const QPoint& p)
 {
     BasicDeviceSettingsDialog dialog(this);

plugins/samplesink/limesdroutput/limesdroutputgui.h

@@ -57,6 +57,7 @@ private:
     DeviceUISet* m_deviceUISet;
     LimeSDROutput* m_limeSDROutput; //!< Same object as above but gives easy access to LimeSDROutput methods and attributes that are used intensively
     LimeSDROutputSettings m_settings;
+    bool m_sampleRateMode; //!< true: device, false: base band sample rate update mode
     QTimer m_updateTimer;
     QTimer m_statusTimer;
     int m_sampleRate;
@@ -69,6 +70,7 @@ private:
     MessageQueue m_inputMessageQueue;
 
     void displaySettings();
+    void displaySampleRate();
     void setNCODisplay();
     void setCenterFrequencyDisplay();
     void setCenterFrequencySetting(uint64_t kHzValue);
@@ -94,6 +96,7 @@ private slots:
     void on_antenna_currentIndexChanged(int index);
     void on_extClock_clicked();
     void on_transverter_clicked();
+    void on_sampleRateMode_toggled(bool checked);
     void openDeviceSettingsDialog(const QPoint& p);
 
     void updateHardware();

plugins/samplesink/limesdroutput/limesdroutputgui.ui

@@ -177,7 +177,7 @@
        <item>
         <layout class="QHBoxLayout" name="freqRightBotLayout">
          <item>
-          <widget class="QLabel" name="deviceRateLabel">
+          <widget class="QLabel" name="deviceRateText">
            <property name="minimumSize">
             <size>
              <width>54</width>
@@ -439,16 +439,28 @@
       </spacer>
      </item>
      <item>
-      <widget class="QLabel" name="samplerateLabel">
-       <property name="sizePolicy">
-        <sizepolicy hsizetype="Maximum" vsizetype="Preferred">
-         <horstretch>0</horstretch>
-         <verstretch>0</verstretch>
-        </sizepolicy>
+      <widget class="QToolButton" name="sampleRateMode">
+       <property name="minimumSize">
+        <size>
+         <width>24</width>
+         <height>0</height>
+        </size>
+       </property>
+       <property name="maximumSize">
+        <size>
+         <width>24</width>
+         <height>16777215</height>
+        </size>
        </property>
        <property name="text">
         <string>SR</string>
        </property>
+       <property name="checkable">
+        <bool>true</bool>
+       </property>
+       <property name="checked">
+        <bool>true</bool>
+       </property>
       </widget>
      </item>
      <item>