Add bandwidth option

uhd_cpp/uhd_spectrum/specwidget.cpp

@@ -8,7 +8,7 @@
 #include <QFileDialog>
 specWidget::specWidget(QWidget *parent) :
 	QWidget(parent),
-	ui(new Ui::specWidget),	
+	ui(new Ui::specWidget),
 	m_attenMod(new QStandardItemModel(this)),
 	m_runth(new uhd_io_thread(this)),
 	m_saveth(new uhd_io_thread(this)),
@@ -613,3 +613,14 @@ void specWidget::on_checkBox_save_stateChanged(int arg1)
 {
 	m_bSaveToFile = arg1==0?false:true;
 }
+
+void specWidget::on_spinBox_bw_valueChanged(int arg1)
+{
+	double bw = arg1 * 1000;
+	if (bw > ui->plotter->getSampleRate())
+		bw = ui->plotter->getSampleRate();
+	if (bw <200000)
+		bw = 200000;
+	if (usrp)
+		usrp->set_rx_bandwidth(bw,m_channel);
+}

uhd_cpp/uhd_spectrum/specwidget.h

@@ -111,6 +111,8 @@ private slots:
 
 	void on_checkBox_save_stateChanged(int arg1);
 
+	void on_spinBox_bw_valueChanged(int arg1);
+
 private:
 	void loadSettings();
 	void saveSettings();

uhd_cpp/uhd_spectrum/specwidget.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>787</width>
+    <width>793</width>
     <height>466</height>
    </rect>
   </property>
@@ -237,8 +237,8 @@
        <rect>
         <x>0</x>
         <y>0</y>
-        <width>310</width>
-        <height>348</height>
+        <width>320</width>
+        <height>370</height>
        </rect>
       </property>
       <attribute name="label">
@@ -352,6 +352,26 @@
          </property>
         </widget>
        </item>
+       <item row="6" column="0">
+        <widget class="QLabel" name="label_12">
+         <property name="text">
+          <string>BW(Khz)</string>
+         </property>
+        </widget>
+       </item>
+       <item row="6" column="1">
+        <widget class="QSpinBox" name="spinBox_bw">
+         <property name="minimum">
+          <number>2</number>
+         </property>
+         <property name="maximum">
+          <number>200000</number>
+         </property>
+         <property name="singleStep">
+          <number>1</number>
+         </property>
+        </widget>
+       </item>
       </layout>
      </widget>
      <widget class="QWidget" name="page_view">
@@ -359,8 +379,8 @@
        <rect>
         <x>0</x>
         <y>0</y>
-        <width>166</width>
-        <height>164</height>
+        <width>320</width>
+        <height>370</height>
        </rect>
       </property>
       <attribute name="label">
@@ -523,8 +543,8 @@
        <rect>
         <x>0</x>
         <y>0</y>
-        <width>310</width>
-        <height>348</height>
+        <width>320</width>
+        <height>370</height>
        </rect>
       </property>
       <attribute name="label">