BladeRF1 output: implemented baseband or device sample rate input option

plugins/samplesink/bladerf1output/bladerf1outputgui.cpp

@@ -38,7 +38,8 @@ Bladerf1OutputGui::Bladerf1OutputGui(DeviceUISet *deviceUISet, QWidget* parent)
 	m_doApplySettings(true),
 	m_forceSettings(true),
 	m_settings(),
-	m_deviceSampleSink(NULL),
+    m_sampleRateMode(true),
+	m_deviceSampleSink(nullptr),
 	m_sampleRate(0),
 	m_lastEngineState(DSPDeviceSinkEngine::StNotStarted)
 {
@@ -189,13 +190,42 @@ void Bladerf1OutputGui::updateSampleRateAndFrequency()
 {
     m_deviceUISet->getSpectrum()->setSampleRate(m_sampleRate);
     m_deviceUISet->getSpectrum()->setCenterFrequency(m_deviceCenterFrequency);
-    ui->deviceRateLabel->setText(QString("%1k").arg(QString::number(m_sampleRate/1000.0, 'g', 5)));
+    displaySampleRate();
+}
+
+void Bladerf1OutputGui::displaySampleRate()
+{
+    ui->sampleRate->blockSignals(true);
+
+    if (m_sampleRateMode)
+    {
+        ui->sampleRateMode->setStyleSheet("QToolButton { background:rgb(60,60,60); }");
+        ui->sampleRateMode->setText("SR");
+        ui->sampleRate->setValueRange(8, BLADERF_SAMPLERATE_MIN, BLADERF_SAMPLERATE_REC_MAX);
+        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_log2Interp);
+        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, BLADERF_SAMPLERATE_MIN/(1<<m_settings.m_log2Interp), BLADERF_SAMPLERATE_REC_MAX/(1<<m_settings.m_log2Interp));
+        ui->sampleRate->setValue(m_settings.m_devSampleRate/(1<<m_settings.m_log2Interp));
+        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 Bladerf1OutputGui::displaySettings()
 {
 	ui->centerFrequency->setValue(m_settings.m_centerFrequency / 1000);
-	ui->sampleRate->setValue(m_settings.m_devSampleRate);
+	displaySampleRate();
 
 	unsigned int bandwidthIndex = BladerfBandwidths::getBandwidthIndex(m_settings.m_bandwidth);
 	ui->bandwidth->setCurrentIndex(bandwidthIndex);
@@ -225,7 +255,12 @@ void Bladerf1OutputGui::on_centerFrequency_changed(quint64 value)
 
 void Bladerf1OutputGui::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_log2Interp);
+    }
+
     sendSettings();
 }
 
@@ -238,9 +273,19 @@ void Bladerf1OutputGui::on_bandwidth_currentIndexChanged(int index)
 
 void Bladerf1OutputGui::on_interp_currentIndexChanged(int index)
 {
-	if ((index <0) || (index > 6))
+	if ((index <0) || (index > 6)) {
 		return;
+    }
+
 	m_settings.m_log2Interp = index;
+    displaySampleRate();
+
+    if (m_sampleRateMode) {
+        m_settings.m_devSampleRate = ui->sampleRate->getValueNew();
+    } else {
+        m_settings.m_devSampleRate = ui->sampleRate->getValueNew() * (1 << m_settings.m_log2Interp);
+    }
+
 	sendSettings();
 }
 
@@ -333,6 +378,12 @@ void Bladerf1OutputGui::on_startStop_toggled(bool checked)
     }
 }
 
+void Bladerf1OutputGui::on_sampleRateMode_toggled(bool checked)
+{
+    m_sampleRateMode = checked;
+    displaySampleRate();
+}
+
 void Bladerf1OutputGui::updateHardware()
 {
 	qDebug() << "BladerfGui::updateHardware";

plugins/samplesink/bladerf1output/bladerf1outputgui.h

@@ -59,6 +59,7 @@ private:
 	bool m_doApplySettings;
 	bool m_forceSettings;
 	BladeRF1OutputSettings m_settings;
+    bool m_sampleRateMode; //!< true: device, false: base band sample rate update mode
 	QTimer m_updateTimer;
 	QTimer m_statusTimer;
 	DeviceSampleSink* m_deviceSampleSink;
@@ -69,6 +70,7 @@ private:
 
 	void blockApplySettings(bool block) { m_doApplySettings = !block; }
 	void displaySettings();
+    void displaySampleRate();
 	void sendSettings();
 	unsigned int getXb200Index(bool xb_200, bladerf_xb200_path xb200Path, bladerf_xb200_filter xb200Filter);
 	void updateSampleRateAndFrequency();
@@ -83,6 +85,7 @@ private slots:
 	void on_vga2_valueChanged(int value);
 	void on_xb200_currentIndexChanged(int index);
 	void on_startStop_toggled(bool checked);
+    void on_sampleRateMode_toggled(bool checked);
 	void updateHardware();
 	void updateStatus();
     void openDeviceSettingsDialog(const QPoint& p);

plugins/samplesink/bladerf1output/bladerf1outputgui.ui

@@ -76,7 +76,7 @@
        <item>
         <layout class="QHBoxLayout" name="deviceRateLayout">
          <item>
-          <widget class="QLabel" name="deviceRateLabel">
+          <widget class="QLabel" name="deviceRateText">
            <property name="minimumSize">
             <size>
              <width>50</width>
@@ -300,16 +300,31 @@
       <number>2</number>
      </property>
      <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="toolTip">
+        <string>Toggle between device to host (SR) and base band (BB) sample rate input</string>
        </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>