DATV demod: GUI changes (4)

plugins/channelrx/demodatv/atvdemodgui.ui

@@ -265,7 +265,7 @@
          </size>
         </property>
         <property name="toolTip">
-         <string>Channel power</string>
+         <string>Channel power (dB)</string>
         </property>
         <property name="text">
          <string>-100.0 dB</string>

plugins/channelrx/demoddatv/datvdemod.cpp

@@ -787,6 +787,7 @@ void DATVDemod::feed(const SampleVector::const_iterator& begin, const SampleVect
     //Complex objC;
     fftfilt::cmplx *objRF;
     int intRFOut;
+    double magSq;
 
     //********** Bis repetita : Let's rock and roll buddy ! **********
 
@@ -849,6 +850,8 @@ void DATVDemod::feed(const SampleVector::const_iterator& begin, const SampleVect
         {
             objIQ.re = objRF->real();
             objIQ.im = objRF->imag();
+            magSq = objIQ.re*objIQ.re + objIQ.im*objIQ.im;
+            m_objMagSqAverage(magSq);
 
             objRF ++;
 

plugins/channelrx/demoddatv/datvdemod.h

@@ -61,6 +61,7 @@ class DownChannelizer;
 #include "dsp/agc.h"
 #include "audio/audiofifo.h"
 #include "util/message.h"
+#include "util/movingaverage.h"
 #include <QBuffer>
 
 #include "datvideostream.h"
@@ -236,6 +237,7 @@ public:
     void CleanUpDATVFramework(bool blnRelease);
     int GetSampleRate();
     void InitDATVFramework();
+    double getMagSq() const { return m_objMagSqAverage; } //!< Beware this is scaled to 2^30
 
     static const QString m_channelIdURI;
     static const QString m_channelId;
@@ -458,6 +460,7 @@ private:
     //QElapsedTimer m_objTimer;
 
     DATVConfig m_objRunning;
+    MovingAverageUtil<double, double, 32> m_objMagSqAverage;
 
     QMutex m_objSettingsMutex;
 

plugins/channelrx/demoddatv/datvdemodgui.cpp

@@ -503,6 +503,13 @@ void DATVDemodGUI::enterEvent(QEvent*)
 
 void DATVDemodGUI::tick()
 {
+    if (m_objDATVDemod)
+    {
+        m_objMagSqAverage(m_objDATVDemod->getMagSq());
+        double magSqDB = CalcDb::dbPower(m_objMagSqAverage / (SDR_RX_SCALED*SDR_RX_SCALED));
+        ui->channePowerText->setText(tr("%1 dB").arg(magSqDB, 0, 'f', 1));
+    }
+
     if((m_intLastDecodedData-m_intPreviousDecodedData)>=0)
     {
         m_intLastSpeed = 8*(m_intLastDecodedData-m_intPreviousDecodedData);

plugins/channelrx/demoddatv/datvdemodgui.h

@@ -120,6 +120,8 @@ private:
     bool m_blnDoApplySettings;
     bool m_blnButtonPlayClicked;
 
+    MovingAverageUtil<double, double, 4> m_objMagSqAverage;
+
     explicit DATVDemodGUI(PluginAPI* objPluginAPI, DeviceUISet *deviceUISet, BasebandSampleSink *rxChannel, QWidget* objParent = 0);
     virtual ~DATVDemodGUI();
 

plugins/channelrx/demoddatv/datvdemodgui.ui

@@ -165,6 +165,19 @@
         </property>
        </spacer>
       </item>
+      <item>
+       <widget class="QLabel" name="channePowerText">
+        <property name="toolTip">
+         <string>Channel power (dB)</string>
+        </property>
+        <property name="text">
+         <string>-100.0 dB</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
      </layout>
     </item>
    </layout>